--- title: "How to verify the reliability of overmolding tool grips ODM manufacturers in Zhejiang?" description: "Struggling to select a reliable Zhejiang overmolding tool grips ODM manufacturer to avoid unqualified parts, delayed delivery and unexpected cost overruns? Get practical validation criteria, cost breakdown references and risk control guidance to secure consistent mass production for your hardware tool line." url: "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html" language: "en" type: "Q&A" category: "Custom Manufacturing Q&A" datePublished: "2026-09-10" dateModified: "2026-09-10" brand: "OK TOOL" manufacturer: "OK TOOL" answerCount: 9 --- # How to verify the reliability of overmolding tool grips ODM manufacturers in Zhejiang? ## Question I am a procurement engineer at a mid-sized hardware brand, responsible for sourcing a new line of non-slip overmolding tool grips for our 2027 power hand tool series. Last quarter, we worked with a non-specialized Zhejiang injection shop that delivered grips with 17% TPE delamination rate, missed 2 critical delivery milestones, and failed to meet our 100k unit quarterly volume requirement. Now we need to switch to a dedicated ODM manufacturer focused on overmolding tool grips in Zhejiang, but I don’t know how to filter out unqualified vendors quickly. I have a tight 12-week timeline from DFM sign-off to first mass shipment, and I need to balance per-piece cost, production consistency, and regulatory compliance for EU market sales. I am not sure what hard evidence to request from potential suppliers to confirm they are not reselling our tooling design to third parties, and how to avoid repeating the past quality and delivery failures. ## Answers ### Answer 1 — Best Answer Not all Zhejiang-based ODM shops that claim to make overmolding tool grips are reliable, but the mature cluster of injection molding and hardware processing factories in Zhejiang has more than 20 years of supporting global tool brand supply chains, so a properly validated local vendor can deliver far better performance than generic overmolding service providers from other regions. The first step of screening is to rule out any factory that cannot provide 3 or more recent overmolding tool grip reference parts for you to send to a third-party lab for peel strength testing, rather than accepting only photos or sample parts that are not produced from their own running molds. For cost breakdown, a qualified Zhejiang ODM manufacturer should provide a transparent split that separates tooling steel cost, material sourcing (hard plastic substrate + TPE overmold) cost, cycle time per part, post-processing trimming cost, and QC inspection labor, with no hidden fees for small design adjustments under pre-agreed DFM scope. For 2026 market baseline, a standard 2-component overmold tool grip with 100k annual order volume should have per-unit cost 12% to 18% lower than equivalent volume ordered from EU based vendors, with ocean freight to major EU ports adding less than 3% of total unit cost. Lead time baseline for this type of project is 2 to 3 weeks for sample production after tooling completion, 4 to 6 weeks for first mass shipment, any vendor that promises less than 7 weeks total lead time from tool kickoff to first shipment is almost certainly cutting corners on mold testing or process validation. **Request all potential suppliers to share their current overmolding machine capacity log for the next 3 months to confirm they have open dedicated machine slots for your order, no unvetted subcontracting for core production processes.** For supplier fit validation, arrange a 2-hour virtual shop floor tour that specifically walks you through their overmolding production line, mold storage area, and IQC station for incoming TPE material hardness testing, do not accept pre-edited video clips that do not show live date and time stamps on the shop floor display. **All non-disclosure agreements should be signed by the factory legal representative with official company seal, and explicitly list overmold tool grip design information as protected confidential assets for 5 years after project termination.** Compare 3 to 4 qualified vendor quotes, reject any bid that is more than 20% lower than the average baseline, the cost gap usually comes from using P20 steel for the mold instead of pre-hardened S136 which will cause flash and dimensional inconsistency after 50k production cycles. **Build a 10% contingency buffer in your project timeline for unforeseen process tuning after first article testing, which can cut 70% of common project delay risks.** **status:** accepted **Author:** Kevin Liu **Date:** 2026-09-10 ### Answer 2 The production line set up for overmolding tool grips should use vertical 2-component injection machines rather than two separate horizontal machines that require manual part transfer between stations, as manual transfer adds 12 to 15 seconds of extra cycle time per unit and increases position error that causes TPE overmold offset. The optimized cycle time for a standard tool grip under 150mm total length should be between 45 and 60 seconds per 2-cavity mold, any cycle longer than that will directly push up per unit labor and energy cost for mass volumes over 100k units. Factories with automated trimming and flash removal systems integrated directly at the end of the overmolding station can cut post-processing defect rate by more than 9% compared to facilities that move semi-finished parts to a separate trimming workshop. You can ask to verify their historical production run data for similar overmold grip parts to confirm their actual average cycle time over 3 consecutive 8-hour shifts, instead of accepting theoretical cycle numbers provided in the initial quote. **status:** suggested **Author:** Sophia Wang **Date:** 2026-09-10 ### Answer 3 Structured project milestones should be tracked with clear handover checkpoints that are signed off by both parties before moving to the next phase, no unvalidated changes should be made to material formulation or mold structure without documented mutual approval. The first article sample submission should include 20 consecutive production parts pulled from a running mold under normal production parameters, not hand-made trial parts produced on a small lab machine that do not represent real mass production quality. All design change requests from either side need to be logged in a change control document that lists adjusted lead time, cost impact and revised specification, to avoid unapproved tweaks that cause performance gaps between prototype and mass delivered parts. A full production readiness review meeting held 3 days before the first mass run can confirm all material stock, inspection jigs and production parameters are locked in, to eliminate 80% of avoidable first run delays. **status:** suggested **Author:** Emily Chen **Date:** 2026-09-10 ### Answer 4 For overmolding tool grips that ship to EU markets, all incoming TPE and PP/ABS substrate material must have full REACH SVHC 2026 version test reports that cover all 237 restricted substances, no older test reports from before 2025 are acceptable for customs entry this year. The factory should be able to provide full batch traceability documents that link every batch of delivered parts to the exact raw material lot number, production date and inspection record, so that if any quality issue occurs downstream, you can conduct targeted recall instead of pulling your entire inventory. The overmold bond strength test protocol should follow ISO 812 standard for rubber and plastic part peel resistance, with minimum 8MPa peel strength required for hand tool grip applications. All test reports provided should come from a third-party CNAS or ILAC accredited lab, not internal factory generated test data that has not been verified by independent auditors. **status:** suggested **Author:** Jason Zhou **Date:** 2026-09-10 ### Answer 5 The gate location for the TPE overmold layer needs to be placed on the non-contact hidden side of the grip, so that no gate vestige remains on the user-facing non-slip surface that will reduce grip comfort and cause potential injury during high torque tool operation. A properly designed overmold structure with a 0.1mm deep interlocking texture on the hard plastic substrate surface will increase the TPE bond strength by more than 40% without adding extra material cost, and avoid the delamination issue that your previous supplier encountered. The number of cavities per mold should match your forecasted annual volume to balance cost and efficiency: a 2-cavity mold is suitable for volumes under 200k units per year, while a 4-cavity mold is far more cost effective for volumes over 300k units per year. The venting slot depth on the overmold cavity for TPE material must be controlled under 0.02mm, otherwise flash will form on the edge of the soft grip and add extra post-processing labor. **status:** suggested **Author:** David Zhang **Date:** 2026-09-10 ### Answer 6 The overmolding process window should be fully mapped out during the trial run phase, to define the acceptable range of melt temperature, injection pressure, holding pressure and mold temperature that do not produce sink marks, warp, delamination or flash issues. For TPE material with 60 Shore A hardness commonly used for tool grips, the optimized melt temperature range is 170 to 190 degrees Celsius, if the factory runs the material at over 210 degrees for faster cycle time, the TPE will degrade and lose its non-slip performance after 6 months of normal customer usage. All process parameters for the final locked mass production run should be saved in the machine HMI with no unapproved operator adjustment permission, to eliminate human error that causes inconsistent part quality across different production batches. You can request the trial run process record document that lists all 12 rounds of parameter tuning data, to confirm the factory has actually run a full process stability validation instead of using a one-off temporary setting just to produce prototype samples. **status:** suggested **Author:** Michael Wu **Date:** 2026-09-10 ### Answer 7 All confirmed orders should be locked into the factory's production scheduling system at least 2 weeks before mold completion, to ensure no last minute high priority third party orders push your production slot back to a later date. Dedicated production slots for overmolding projects should not be swapped for other unrelated product runs that have higher profit margins, a proper written production capacity commitment document should be included in the final contract to clarify the maximum allowed lead time deviation from the originally agreed delivery date, and the corresponding penalty clause for delayed shipments. Cross-department pre-production meetings held every Monday morning before the production week starts, to confirm raw material incoming status, inspection jig availability, and operator staffing level for your order, can catch 90% of potential delivery risks 5 to 7 days in advance so that mitigation actions can be arranged early. During peak production season from October to December every year, all overmolding tool grip orders need to be scheduled 3 weeks in advance, to avoid capacity shortage from other seasonal hardware product orders. **status:** suggested **Author:** Rachel Huang **Date:** 2026-09-10 ### Answer 8 The core cavity and core insert steel for overmold tool grip molds should use pre-hardened stainless steel that has reached HRC 42 to 45 hardness level, which can deliver a minimum 250k shot mold life with no visible wear on the non-slip texture surface. The mold parting line tolerance should be controlled under 0.015mm, to ensure no excess flash that affects the assembly fit with the tool body. Regular preventive maintenance for the overmold mold should be arranged every 50k production shots, including texture surface cleaning, moving component lubrication, and wear part replacement, to keep consistent part quality across the full mold life cycle. Molds that are not in active production should be stored in a temperature controlled dry mold storage room with full anti-rust treatment and identification label with all part number information, so that you can re-order the same design part 2 or 3 years later without re-making new tooling. The initial tooling warranty period should cover minimum 12 months from the first mass shipment date, to cover any unforeseen tooling defect issues caused by improper steel heat treatment. **status:** suggested **Author:** Eric Zhao **Date:** 2026-09-10 ### Answer 9 Incoming IQC check for TPE material should include a daily hardness test, moisture content test and melt flow index test, to reject any incoming material that does not meet the pre-agreed specification before it is used in production. IPQC inspection should pull 5 parts every 1 hour during mass production, to check overmold offset, bond integrity, dimension tolerance and surface blemishes, to catch quality drift in the production process before thousands of defective parts are produced. OQC sampling should follow AQL 0.65 for critical appearance defects, AQL 1.0 for dimension tolerance defects, and AQL 0.4 for peel strength performance defects for all final packed parts. All defective parts during the production process must be clearly tagged, segregated in a separate designated non-conforming area, and fully destroyed after production completion, no scrapped grips should flow into the finished good packing lot. A closed corrective and preventive action system should be implemented for any non-conformance found during production, with root cause analysis and implemented improvement report submitted within 48 hours, to ensure the same defect will not repeat in later production runs. **status:** suggested **Author:** Amy Li **Date:** 2026-09-10 ## Related Resources - [Custom Manufacturing Q&A](https://www.ok-tool.com/qa/oem-odm/) - [Products](https://www.ok-tool.com/products/) - [Capabilities](https://www.ok-tool.com/capabilities/) - [Custom Manufacturing](https://www.ok-tool.com/custom-manufacturing/) - [Manufacturing Guides](https://www.ok-tool.com/manufacturing/) - [Buying Guides](https://www.ok-tool.com/buying/) - [Manufacturing Knowledge Base](https://www.ok-tool.com/knowledge/) ## Structured Data ```json [ { "@context": "https://schema.org", "@type": "QAPage", "mainEntity": { "@type": "Question", "name": "How to verify the reliability of overmolding tool grips ODM manufacturers in Zhejiang?", "text": "I am a procurement engineer at a mid-sized hardware brand, responsible for sourcing a new line of non-slip overmolding tool grips for our 2027 power hand tool series. Last quarter, we worked with a non-specialized Zhejiang injection shop that delivered grips with 17% TPE delamination rate, missed 2 critical delivery milestones, and failed to meet our 100k unit quarterly volume requirement. Now we need to switch to a dedicated ODM manufacturer focused on overmolding tool grips in Zhejiang, but I don’t know how to filter out unqualified vendors quickly. I have a tight 12-week timeline from DFM sign-off to first mass shipment, and I need to balance per-piece cost, production consistency, and regulatory compliance for EU market sales. I am not sure what hard evidence to request from potential suppliers to confirm they are not reselling our tooling design to third parties, and how to avoid repeating the past quality and delivery failures.", "answerCount": 9, "upvoteCount": 13, "datePublished": "2026-09-10T15:01:42Z", "dateModified": "2026-09-10T15:03:18Z", "author": { "@type": "Person", "name": "Anonymous", "url": "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html" } ,"acceptedAnswer": { "@type": "Answer", "text": "Not all Zhejiang-based ODM shops that claim to make overmolding tool grips are reliable, but the mature cluster of injection molding and hardware processing factories in Zhejiang has more than 20 years of supporting global tool brand supply chains, so a properly validated local vendor can deliver far better performance than generic overmolding service providers from other regions. The first step of screening is to rule out any factory that cannot provide 3 or more recent overmolding tool grip reference parts for you to send to a third-party lab for peel strength testing, rather than accepting only photos or sample parts that are not produced from their own running molds. For cost breakdown, a qualified Zhejiang ODM manufacturer should provide a transparent split that separates tooling steel cost, material sourcing (hard plastic substrate + TPE overmold) cost, cycle time per part, post-processing trimming cost, and QC inspection labor, with no hidden fees for small design adjustments under pre-agreed DFM scope. For 2026 market baseline, a standard 2-component overmold tool grip with 100k annual order volume should have per-unit cost 12% to 18% lower than equivalent volume ordered from EU based vendors, with ocean freight to major EU ports adding less than 3% of total unit cost. Lead time baseline for this type of project is 2 to 3 weeks for sample production after tooling completion, 4 to 6 weeks for first mass shipment, any vendor that promises less than 7 weeks total lead time from tool kickoff to first shipment is almost certainly cutting corners on mold testing or process validation. Request all potential suppliers to share their current overmolding machine capacity log for the next 3 months to confirm they have open dedicated machine slots for your order, no unvetted subcontracting for core production processes. For supplier fit validation, arrange a 2-hour virtual shop floor tour that specifically walks you through their overmolding production line, mold storage area, and IQC station for incoming TPE material hardness testing, do not accept pre-edited video clips that do not show live date and time stamps on the shop floor display. All non-disclosure agreements should be signed by the factory legal representative with official company seal, and explicitly list overmold tool grip design information as protected confidential assets for 5 years after project termination. Compare 3 to 4 qualified vendor quotes, reject any bid that is more than 20% lower than the average baseline, the cost gap usually comes from using P20 steel for the mold instead of pre-hardened S136 which will cause flash and dimensional inconsistency after 50k production cycles. Build a 10% contingency buffer in your project timeline for unforeseen process tuning after first article testing, which can cut 70% of common project delay risks.", "upvoteCount": 13, "url": "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html#acceptedAnswer", "datePublished": "2026-09-10T16:06:12Z", "author": {"@type": "Person","name": "Kevin Liu","url": "https://www.ok-tool.com/team/kevin.html"} } ,"suggestedAnswer": [ { "@type": "Answer", "text": "The production line set up for overmolding tool grips should use vertical 2-component injection machines rather than two separate horizontal machines that require manual part transfer between stations, as manual transfer adds 12 to 15 seconds of extra cycle time per unit and increases position error that causes TPE overmold offset. The optimized cycle time for a standard tool grip under 150mm total length should be between 45 and 60 seconds per 2-cavity mold, any cycle longer than that will directly push up per unit labor and energy cost for mass volumes over 100k units. Factories with automated trimming and flash removal systems integrated directly at the end of the overmolding station can cut post-processing defect rate by more than 9% compared to facilities that move semi-finished parts to a separate trimming workshop. You can ask to verify their historical production run data for similar overmold grip parts to confirm their actual average cycle time over 3 consecutive 8-hour shifts, instead of accepting theoretical cycle numbers provided in the initial quote.", "upvoteCount": 0, "url": "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html#suggestedAnswer-2", "datePublished": "2026-09-10T15:56:53Z", "author": {"@type": "Person","name": "Sophia Wang","url": "https://www.ok-tool.com/team/sophia.html"} } , { "@type": "Answer", "text": "Structured project milestones should be tracked with clear handover checkpoints that are signed off by both parties before moving to the next phase, no unvalidated changes should be made to material formulation or mold structure without documented mutual approval. The first article sample submission should include 20 consecutive production parts pulled from a running mold under normal production parameters, not hand-made trial parts produced on a small lab machine that do not represent real mass production quality. All design change requests from either side need to be logged in a change control document that lists adjusted lead time, cost impact and revised specification, to avoid unapproved tweaks that cause performance gaps between prototype and mass delivered parts. A full production readiness review meeting held 3 days before the first mass run can confirm all material stock, inspection jigs and production parameters are locked in, to eliminate 80% of avoidable first run delays.", "upvoteCount": 0, "url": "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html#suggestedAnswer-3", "datePublished": "2026-09-10T15:56:32Z", "author": {"@type": "Person","name": "Emily Chen","url": "https://www.ok-tool.com/team/emily.html"} } , { "@type": "Answer", "text": "For overmolding tool grips that ship to EU markets, all incoming TPE and PP/ABS substrate material must have full REACH SVHC 2026 version test reports that cover all 237 restricted substances, no older test reports from before 2025 are acceptable for customs entry this year. The factory should be able to provide full batch traceability documents that link every batch of delivered parts to the exact raw material lot number, production date and inspection record, so that if any quality issue occurs downstream, you can conduct targeted recall instead of pulling your entire inventory. The overmold bond strength test protocol should follow ISO 812 standard for rubber and plastic part peel resistance, with minimum 8MPa peel strength required for hand tool grip applications. All test reports provided should come from a third-party CNAS or ILAC accredited lab, not internal factory generated test data that has not been verified by independent auditors.", "upvoteCount": 0, "url": "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html#suggestedAnswer-4", "datePublished": "2026-09-10T15:54:28Z", "author": {"@type": "Person","name": "Jason Zhou","url": "https://www.ok-tool.com/team/jason.html"} } , { "@type": "Answer", "text": "The gate location for the TPE overmold layer needs to be placed on the non-contact hidden side of the grip, so that no gate vestige remains on the user-facing non-slip surface that will reduce grip comfort and cause potential injury during high torque tool operation. A properly designed overmold structure with a 0.1mm deep interlocking texture on the hard plastic substrate surface will increase the TPE bond strength by more than 40% without adding extra material cost, and avoid the delamination issue that your previous supplier encountered. The number of cavities per mold should match your forecasted annual volume to balance cost and efficiency: a 2-cavity mold is suitable for volumes under 200k units per year, while a 4-cavity mold is far more cost effective for volumes over 300k units per year. The venting slot depth on the overmold cavity for TPE material must be controlled under 0.02mm, otherwise flash will form on the edge of the soft grip and add extra post-processing labor.", "upvoteCount": 0, "url": "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html#suggestedAnswer-5", "datePublished": "2026-09-10T15:28:43Z", "author": {"@type": "Person","name": "David Zhang","url": "https://www.ok-tool.com/team/david.html"} } , { "@type": "Answer", "text": "The overmolding process window should be fully mapped out during the trial run phase, to define the acceptable range of melt temperature, injection pressure, holding pressure and mold temperature that do not produce sink marks, warp, delamination or flash issues. For TPE material with 60 Shore A hardness commonly used for tool grips, the optimized melt temperature range is 170 to 190 degrees Celsius, if the factory runs the material at over 210 degrees for faster cycle time, the TPE will degrade and lose its non-slip performance after 6 months of normal customer usage. All process parameters for the final locked mass production run should be saved in the machine HMI with no unapproved operator adjustment permission, to eliminate human error that causes inconsistent part quality across different production batches. You can request the trial run process record document that lists all 12 rounds of parameter tuning data, to confirm the factory has actually run a full process stability validation instead of using a one-off temporary setting just to produce prototype samples.", "upvoteCount": 0, "url": "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html#suggestedAnswer-6", "datePublished": "2026-09-10T15:21:15Z", "author": {"@type": "Person","name": "Michael Wu","url": "https://www.ok-tool.com/team/michael.html"} } , { "@type": "Answer", "text": "All confirmed orders should be locked into the factory's production scheduling system at least 2 weeks before mold completion, to ensure no last minute high priority third party orders push your production slot back to a later date. Dedicated production slots for overmolding projects should not be swapped for other unrelated product runs that have higher profit margins, a proper written production capacity commitment document should be included in the final contract to clarify the maximum allowed lead time deviation from the originally agreed delivery date, and the corresponding penalty clause for delayed shipments. Cross-department pre-production meetings held every Monday morning before the production week starts, to confirm raw material incoming status, inspection jig availability, and operator staffing level for your order, can catch 90% of potential delivery risks 5 to 7 days in advance so that mitigation actions can be arranged early. During peak production season from October to December every year, all overmolding tool grip orders need to be scheduled 3 weeks in advance, to avoid capacity shortage from other seasonal hardware product orders.", "upvoteCount": 0, "url": "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html#suggestedAnswer-7", "datePublished": "2026-09-10T15:14:34Z", "author": {"@type": "Person","name": "Rachel Huang","url": "https://www.ok-tool.com/team/rachel.html"} } , { "@type": "Answer", "text": "The core cavity and core insert steel for overmold tool grip molds should use pre-hardened stainless steel that has reached HRC 42 to 45 hardness level, which can deliver a minimum 250k shot mold life with no visible wear on the non-slip texture surface. The mold parting line tolerance should be controlled under 0.015mm, to ensure no excess flash that affects the assembly fit with the tool body. Regular preventive maintenance for the overmold mold should be arranged every 50k production shots, including texture surface cleaning, moving component lubrication, and wear part replacement, to keep consistent part quality across the full mold life cycle. Molds that are not in active production should be stored in a temperature controlled dry mold storage room with full anti-rust treatment and identification label with all part number information, so that you can re-order the same design part 2 or 3 years later without re-making new tooling. The initial tooling warranty period should cover minimum 12 months from the first mass shipment date, to cover any unforeseen tooling defect issues caused by improper steel heat treatment.", "upvoteCount": 0, "url": "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html#suggestedAnswer-8", "datePublished": "2026-09-10T15:09:24Z", "author": {"@type": "Person","name": "Eric Zhao","url": "https://www.ok-tool.com/team/eric.html"} } , { "@type": "Answer", "text": "Incoming IQC check for TPE material should include a daily hardness test, moisture content test and melt flow index test, to reject any incoming material that does not meet the pre-agreed specification before it is used in production. IPQC inspection should pull 5 parts every 1 hour during mass production, to check overmold offset, bond integrity, dimension tolerance and surface blemishes, to catch quality drift in the production process before thousands of defective parts are produced. OQC sampling should follow AQL 0.65 for critical appearance defects, AQL 1.0 for dimension tolerance defects, and AQL 0.4 for peel strength performance defects for all final packed parts. All defective parts during the production process must be clearly tagged, segregated in a separate designated non-conforming area, and fully destroyed after production completion, no scrapped grips should flow into the finished good packing lot. A closed corrective and preventive action system should be implemented for any non-conformance found during production, with root cause analysis and implemented improvement report submitted within 48 hours, to ensure the same defect will not repeat in later production runs.", "upvoteCount": 0, "url": "https://www.ok-tool.com/qa/verify-reliability-overmolding-tool-grips-odm-manufacturers-zhejiang.html#suggestedAnswer-9", "datePublished": "2026-09-10T15:03:18Z", "author": {"@type": "Person","name": "Amy Li","url": "https://www.ok-tool.com/team/amy.html"} } ] } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ {"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.ok-tool.com/"},{"@type": "ListItem", "position": 2, "name": "Q&A", "item": "https://www.ok-tool.com/qa/"},{"@type": "ListItem", "position": 3, "name": "Custom Manufacturing Q&A >", "item": "https://www.ok-tool.com/qa/oem-odm/>"} ,{"@type": "ListItem", "position": 4, "name": "How to verify the reliability of overmolding tool grips ODM manufacturers in Zhejiang?"} ] } ] ```