Ningbo Zhaoxu Plastic Products Co., Ltd. undertakes mold development and injection molding processing for plastic tool storage boxes and component storage boxes. We support custom production from drawings, samples, as well as injection molding with customer-supplied molds and materials. Integrating custom plastic mold development, precision injection molding and finished product assembly, we provide one-stop injection molding supporting services from mold development to mass production for tool manufacturers, hardware & electromechanical enterprises, electronic component brands, trading and e-commerce customers.

      Tool storage boxes are widely used to store accessories, batteries, small electronic components and miniature tools. Such products impose high requirements on box structural strength, snap fit flexibility for opening and closing, fitting precision of transparent lids, internal limiting structures, assembly clearances and batch consistency. Our team can complete mold design, machining, mold trials, mass production and supporting post-processing based on customer drawings or physical samples.

      The factory is located in Fanci Mold City, Longshan, Cixi, Ningbo, covering 2,000 square meters with separate mold workshop, injection molding workshop and assembly workshop. The mold workshop is equipped with CNC machining centers, high-speed engraving and milling machines, large gantry equipment and other processing facilities. Haitian injection molding machines equipped with servo manipulators and production monitoring devices are adopted in the injection workshop to realize stable mass production.

Product Processing Advantages

      1. Integrated mold development & injection molding service. With in-house mold and injection workshops, the whole workflow including mold design & manufacturing, injection production and finished assembly is completed internally. Customers do not need to coordinate with multiple suppliers, facilitating project tracking and quality control.

      2. Complete in-house mold processing equipment. All mold processing procedures are finished independently to properly control mold lead time and update project progress timely.

      3. Automated injection molding production. Machines equipped with servo manipulators and production monitoring systems reduce human interference and ensure consistent appearance and dimensions across batches.

      4. A wide selection of engineering plastics. Materials such as PP, ABS, PC and ABS+PC alloy are available. We provide proper material selection suggestions considering practical requirements including drop resistance, snap toughness, transparent windows and impact resistance. PC can be used for transparent lids to guarantee light transmission; PP or ABS can be adopted for box bases to balance strength and cost.

      5. Focus on product surface and assembly quality. By optimizing mold polishing, injection molding parameters and demolding schemes, common defects such as sink marks, flash, flow marks and mold lines are improved. We control assembly gaps of box bodies, snaps and transparent lids to ensure smooth opening and closing of snaps.

      6. Supporting post-finishing services. We can perform inspection, simple assembly, packaging and other follow-up procedures according to customer demands, reducing customers’ workload for multi-party coordination and secondary processing.

Applicable Product Categories

Full injection molding of tool storage boxes

Injection molding of plastic storage boxes for electronic components

Processing of plastic parts for battery storage boxes

Mold development and injection molding for plastic boxes of hardware accessories

Mold development for transparent flip-top storage boxes

Custom snap-fit plastic packaging boxes

Injection molding of tool box base and transparent lid accessories

The above are regular processing categories. For other industrial plastic boxes, protective storage boxes and special-shaped plastic housings, we can assess customization feasibility upon drawings or samples.

Common Material Guide

      PP: Good toughness and impact resistance with moderate cost, suitable for storage box base housings. The snaps can withstand repeated opening and closing and are not easy to break.

      ABS: Good moldability, excellent surface gloss and stable dimensions, suitable for box bases requiring premium appearance and texture.

      PC: High transparency and outstanding impact resistance, mostly used for transparent top lids of storage boxes with good light transmittance.

      ABS+PC alloy: Balances toughness, impact resistance and surface finish, suitable for storage boxes under demanding working conditions.

      The final material selection is determined comprehensively by product structure, working conditions and certification requirements. Our engineers offer professional material recommendations.

Processing Workflow

      Customer submits requirements with drawings or physical samples → Feasibility assessment by engineers → Proposal and quotation issued for mutual confirmation → Mold design → Mold fabrication → Mold trial and sampling → Customer sample approval → Mass injection molding → Finished product inspection & packaging → Logistics delivery → After-sales technical support.

      During demand evaluation, customers provide 2D/3D drawings or physical samples. Engineers analyze product structure, mold scheme and material selection. Quotation is generally available within 1–2 working days.

      Mold design confirms key items including gates, parting surfaces, ejection structures and venting positions. Mold structural optimization is carried out for snaps and transparent parts.

      All mold procedures are completed in our own workshop, including CNC machining, polishing, mold fitting and mold trials.

      After mold trials, samples are inspected for dimension, appearance, snap opening-closing performance and lid assembly. Mold adjustment will be made if necessary, and mass production will start only after sample approval.

      Automated equipment is adopted in mass production with periodic product sampling inspection.

      Finished products are inspected for appearance, dimension and assembly functions before packaging and shipment. Relevant production records can be provided on request.

Quality Control

      Raw material grades and batches are checked upon warehouse entry; material certificates can be provided for key raw materials.

      For every production run, the first article passes appearance, dimensional and assembly function inspection before mass production starts.

      Periodic sampling inspection of product dimension, appearance and snap tightness during production; process parameters are adjusted as needed.

      Final inspection is carried out before shipment to minimize defective outflow.

      Information of each batch can be traced back to production machines and raw material batches for convenient troubleshooting.

Factory Profile

      The factory covers approximately 2,000 square meters with separate workshops for mold making, injection molding and assembly. More than ten sets of mold equipment are available, including CNC machining centers, high-speed engraving and milling machines and large gantry equipment. Injection molding equipment consists of Haitian injection molding machines equipped with servo manipulators and high-definition monitoring systems.

      The core engineering team boasts 25 years of experience in plastic part molding and 15 years of automotive component quality control, with OEM supporting experience. Mature quality control experience can be applied to the manufacturing of tool storage boxes and industrial plastic boxes.

      The factory is located in Fanci Mold City, Longshan Town, Cixi, Ningbo, close to National Highway 329 with convenient logistics and transportation.

Cooperation Steps

      1. Inquiry & Communication: Submit drawings or samples and specify product requirements. Response and communication within 1 working day.

      2. Solution Evaluation: Engineers assess product structure, mold and material proposals within 1–2 working days.

      3. Quotation Confirmation: Provide quotation for molds and products, and confirm cooperation terms.

      4. Mold Development: Complete design, machining, mold trial and tuning. Lead time varies according to product complexity.

      5. Sample Confirmation: Samples are delivered for customer verification of dimension, appearance and snap assembly & opening performance.

      6. Mass Production: Production is carried out per order and delivered according to schedule.

FAQ

Q: Can you make a mold for a storage box if I only have physical samples without drawings? A: Yes. Customization from samples is available. We can reverse-engineer based on physical samples and then develop corresponding molds.

Q: What material is generally selected for transparent lids of storage boxes? A: PC material is mostly adopted for its good transparency and impact resistance. Alternative solutions can also be discussed based on cost requirements.

Q: Snaps tend to crack. Can optimization be done at the mold design stage? A: Yes. Structural, gating and venting optimization will be performed for snap positions during mold design. Material selection suggestions will also be provided to reduce the risk of snap fracture.

Q: What is the MOQ for injection molding of tool storage boxes? A: The minimum order quantity varies with product structure and mold scheme. Both small-batch trial production and large-volume orders are negotiable, subject to the confirmed quotation.

Q: Can we match box bodies in different colors with transparent lids? A: Yes. Box body color can be customized as requested, and transparent raw materials are used for lids. Specific requirements can be confirmed in early communication.

Q: Will samples be provided for confirmation before delivery? A: Yes. Samples are normally available after T1 mold trial. Mass production will be arranged only after customers verify sample dimensions, appearance and snap opening & assembly performance.

Contact Information

Company Name: Ningbo Zhaoxu Plastic Products Co., Ltd. Factory Address: No.5 Weisan Road, Fanci, Longshan Town, Cixi City, Ningbo, Zhejiang Province, P.R.China

Business Scope: Injection molding of tool storage boxes, custom mold development for industrial plastic boxes, custom precision injection molds, custom non-standard plastic parts, mold development & injection molding from samples.

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