Ningbo Chaoxu Plastic Products Co., Ltd. professionally undertakes mold development and precision injection molding services for automotive plastic housings, supporting drawing-based customization, sample-based mold making, and injection molding with customer-supplied materials and molds. We integrate mold R&D and manufacturing, precision injection molding, and post-processing into one service, targeting automotive parts enterprises and auto parts suppliers. We provide a complete one-stop mold opening and injection molding service for automotive filter housings, pipeline connector housings, vehicle electronic appliance housings, and other components.

      Automotive housings are mostly used in vehicle pipeline, filtration, and vehicle electronic systems. The products have stringent requirements for dimensional accuracy, sealing fit positions, temperature resistance, oil resistance, aging resistance, snap-fit strength, and environmental tolerance. The dimensional tolerances of insertion positions, snap fits, sealing grooves, and pipeline interfaces directly affect assembly sealing performance and overall vehicle reliability. We can complete DFM analysis, mold manufacturing, trial molding, and batch injection molding production based on customer 3D drawings or physical samples.

      The factory is located in Mould City, Fanshi, Longshan, Cixi, Ningbo, covering an area of 2,000 square meters, with independent mold workshop and injection molding workshop. The mold workshop is equipped with a full set of processing equipment including CNC machining centers, high-speed engraving and milling machines, EDM machines, and grinders. The injection molding workshop is equipped with Haitian series injection molding machines with servo robotic arms, providing stable mass production capability for precision plastic parts.

Product Processing Advantages

      1. Integrated mold and injection molding — product structure evaluation, mold design and processing, trial molding and mold correction, and injection molding production are all completed internally, reducing outsourced processes and facilitating control over delivery time and part consistency.

      2. Early-stage DFM manufacturability analysis — risk assessment for sealing grooves, pipeline plug-in interfaces, snap fits, and assembly positioning features; early structural optimization to avoid issues such as assembly water/air leakage, snap-fit breakage, and deformation.

      3. Automotive-specific plastic materials available — PP-GF, PA-GF, PBT, ABS+PC and other reinforced, temperature-resistant, and oil-resistant grades to meet automotive parts weather resistance, medium resistance, and aging resistance requirements.

      4. Precision mold processing capability — strict control over sealing surfaces and insertion hole dimensional accuracy to ensure assembly fit and sealing performance; characters and logos can be directly engraved on the mold.

      5. Complete quality control process — first article inspection, in-process patrol inspection, key dimension inspection of finished products, material reports available, meeting automotive parts traceability requirements.

      6. Supporting post-processing available — appearance inspection, simple assembly, packaging and shipping, reducing customer secondary processing workload.

Applicable Processing Categories

      Injection molding of automotive filter plastic housings

      Automotive pipeline connector plastic housings

      Vehicle electronic appliance housing injection molding customization

      Mold development for various automotive structural parts

      Processing of reinforced plastic automotive parts

      Automotive housing logo/marking integrated molding

      Customization of other automotive plastic parts

      The above are conventional processing categories. For other automotive plastic parts, mold feasibility can be evaluated upon providing drawings or samples.

Common Material Descriptions

      PP-GF glass-fiber-reinforced PP: chemical resistant, good toughness, moderate cost, mostly used for filter housings and pipeline fittings.

      PA-GF glass-fiber nylon: high strength, oil-resistant, temperature-resistant, wear-resistant, suitable for load-bearing and pipeline connector automotive parts.

      PBT: good dimensional stability, temperature and chemical resistant, suitable for vehicle electronic appliances and precision plug-in housings.

      ABS+PC: impact-resistant, temperature-resistant, suitable for vehicle appearance housing parts.

      Material selection is determined comprehensively based on vehicle working conditions, temperature/oil resistance, strength, and cost. Engineers provide material selection recommendations.

Processing Workflow

      Customer provides 3D drawings / physical samples → DFM product structure evaluation → Output solution and quotation, confirmed by both parties → Mold structure design → Mold CNC/EDM processing, polishing and fitting → T1 trial molding → Samples sent to customer for confirmation → Mold modification per feedback → Batch injection molding after sample approval → Product inspection → Packaging and delivery → After-sales follow-up.

      During the requirement evaluation stage, customers provide drawings or physical samples, specify working conditions, material, and annual output requirements — quotation solution output within 1–2 working days.

      Mold design focuses on sealing grooves, pipeline interfaces, snap fits, and positioning structures; processing begins after design solution confirmation.

      After trial molding, dimensions, assembly, sealing fit, and appearance are inspected; mass production starts after customer confirmation.

Quality Control

      Raw material incoming inspection verifies grade; material certificates available for reinforced materials.

      Dimension inspection at each mold processing stage, with focus on key tolerances of sealing and plug-in positions.

      Injection molding production implements first article inspection, scheduled in-process patrol inspections, monitoring deformation, short shots, cracks, and flash.

      Finished products undergo key inspection of sealing surfaces, insertion holes, and snap fits; defective products are sorted and quarantined.

      Production records document machine and raw material batches for full traceability.

Factory Basic Information

      Factory covers about 2,000 square meters, divided into independent mold, injection molding, and assembly workshops.

      Mold workshop has over ten sets of complete processing equipment including CNC machining centers, high-speed engraving and milling machines, EDM machines, and grinders.

      Injection molding equipment consists of Haitian injection molding machines with servo robotic arms and production monitoring systems.

      Core engineers have 25 years of plastic molding experience and 15 years of automotive parts quality control experience, with OEM supporting service experience.

      Factory is located in Mould City, Fanshi, Longshan, Cixi, Ningbo, near National Highway 329, with convenient logistics and transportation.

Cooperation Steps

      1. Consultation & contact: Provide 3D drawings or physical samples, specify annual output, material, and working condition requirements; response within 1 working day.

      2. Solution evaluation: Engineers complete product evaluation and output mold and injection molding product quotation within 1–2 working days.

      3. Quotation confirmation: Confirm mold steel, plastic material, delivery time, and cooperation terms.

      4. Mold development: Complete structural design, processing, assembly, trial molding, and mold correction; cycle time depends on product complexity.

      5. Sample confirmation: Send trial samples; customer verifies dimensions, assembly, and sealing performance, completing mold acceptance.

      6. Mass production: Carry out injection molding per order, deliver after inspection and packaging.

FAQ

Q: Can molds be made with only physical automotive housing samples but no drawings?

A: Yes, we support sample-based reverse engineering to generate 3D models before mold development.

Q: Can automotive parts requiring glass-fiber reinforcement and oil/temperature resistance be produced?

A: Yes, we use corresponding reinforced and modified plastic materials to meet automotive parts working condition requirements.

Q: Can logo/marking characters on housings be directly molded?

A: Yes, concave/convex characters can be engraved on the mold insert and directly formed during injection molding. Laser engraving or silk-screen printing can also be done as post-processing.

Q: Does automotive housing injection molding support small-batch trial production?

A: After mold acceptance, we support everything from small trial orders to large batch orders.

Q: Are samples provided for confirmation before mass production?

A: Yes, samples are provided after trial molding. Mass production starts only after customer confirmation.

Contact Information

Company name: Ningbo Chaoxu Plastic Products Co., Ltd.

Factory address: No. 5, Fanshi Weisan Road, Longshan Town, Cixi City, Ningbo City, Zhejiang Province

Business: injection molding of automotive plastic housings, custom mold making for automotive parts, precision injection molds, glass-fiber-reinforced plastic parts, sample/drawing-based customization

1688 store: https://chaoxusuliao.1688.com