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Shanghai Pingzhou Plastic Products

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  • +86-18939901200

  • shpzsj@163.com

  • No. 88, Yechang Road, Yexie Town, Songjiang District, Shanghai, China

Plastic Injection Molding Small Parts Manufacturers

Shanghai Pingzhou Plastic Products Co., Ltd.

Our company is an integrated solution provider specializing in injection mold design and manufacturing as well as plastic injection molding. We are committed to offering end‑to‑end services—from product development, mold design, and tooling fabrication to production injection molding—for customers in the medical, consumer goods, automotive, home appliance, and electronics sectors.

As China Injection Molding Small Parts Manufacturers and Molded Plastic Parts Factory, we maintain a comprehensive in‑house machining chain, equipped with high‑precision CNC machining centers, EDM (Electrical Discharge Machining), wire EDM (WEDM), precision grinders, CNC lathes, milling machines, deep‑hole drilling machines, and other mold‑making equipment. Our injection molding workshop houses more than 20 injection molding machines with various clamping‑force tonnages, covering a wide molding range from small precision components to medium‑ and large‑sized structural parts. These are complemented by auxiliary peripheral equipment such as mold temperature controllers, centralized material feeding systems, and automated robotic pick‑and‑place units. This robust infrastructure gives us the proven capability to design, develop, and manufacture medium‑ to high‑precision injection molds, as well as to undertake high‑volume production orders.

Backed by an experienced team of mold structure and process design engineers, we leverage the vertical integration advantage of integrated tooling and molding to significantly shorten the lead time from product development to mass production, while effectively reducing overall costs for our customers.

Upholding the philosophy of “Customer First, Continuous Improvement” Shanghai Pingzhou Plastic Products Co., Ltd. looks forward to providing partners across various industries with cost‑effective, rapidly responsive solutions for plastic products and injection molds.

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Precision Injection Molds for Global Manufacturing

Shanghai Pingzhou Plastic Products Co., Ltd. is an integrated manufacturer and supplier of custom injection molds and molded plastic parts, based in Shanghai, China. With over 20 years of experience, an 8,000㎡ factory, and a team of 60+ technicians, we provide end-to-end solutions—from product development and mold design to tooling fabrication and high-volume injection molding. Our molds serve the electronics, medical, automotive, home appliance, and consumer goods industries, delivering components with tight tolerances and reliable performance.

Our in-house machining chain includes high-precision CNC centers, EDM, wire EDM, precision grinders, and CNC lathes, complemented by more than 20 injection molding machines with varying clamping forces. This vertical integration lets us control quality at every step, reduce lead times, and offer cost-effective solutions for complex projects.

Our Product Range

We offer five specialized mold categories, each engineered for specific applications and production requirements. The table below summarizes our standard offerings and typical uses.

Mold Category Typical Applications Key Features
Electronic Precision Injection Molds Connectors, relay housings, micro-gears, LED frames Tolerances ±0.01mm, multi-cavity hot runner, conformal cooling
Medical Supplies Injection Molds Syringes, infusion connectors, test tubes Corrosion-resistant steel, sterile design, multi-cavity options
Automotive Part Injection Molds Dashboards, lighting, interior components Hot runner, gas-assisted, engineering plastics (PA, ABS, POM)
Home Appliance Injection Molds Robot vacuum housings, refrigerator drawers, AC casings High stability, aesthetic surfaces, large-part capability
Two-Color Injection Molds Cups, toothbrushes, handle housings Multi-material molding, precise alignment, soft-touch options

Application Fit and Engineering Value

Each mold category is designed to meet the specific demands of its target industry. For electronics, we achieve ultra-precision with tolerances as tight as ±0.01mm, essential for connectors and micro-components. Medical molds use premium corrosion-resistant steels and designs free of cleaning dead zones to support sterile production. Automotive molds handle large structural parts with hot runner and gas-assisted processes, enabling lightweighting and durability. Home appliance molds focus on high-stability production for large casings, while two-color molds deliver multi-material aesthetics and functionality.

Our engineering team performs DFM (Design for Manufacturability) analysis at the start of each project, predicting shrinkage, deformation, and demolding issues before machining begins. This reduces trial runs and overall costs. We also provide two rounds of free mold modifications for electronic precision molds, ensuring the final tool meets your exact specifications.

Quality Assurance and Acceptance

We implement a three-level inspection system: first article inspection, in-process inspection, and final inspection. Our quality lab is equipped with 2D and 3D coordinate measuring machines to verify dimensions and appearance. All products comply with RoHS and REACH environmental requirements. For each mold, we provide full-dimensional inspection reports and conduct trial runs to validate performance before delivery.

Information We Use to Configure Your Solution

To prepare an accurate proposal and quotation, we need the following project inputs:

  • Product drawings (2D/3D) or physical samples
  • Material specification (e.g., PP, PC, PA, ABS, POM) and any special requirements (flame retardant, medical grade, etc.)
  • Expected annual volume and target cycle time
  • Part dimensions and critical tolerances
  • Surface finish and appearance requirements
  • Any regulatory or compliance standards (e.g., FDA, RoHS, REACH)

With this information, we can design the mold structure, select appropriate steels, and determine cavity count to optimize cost and efficiency.

Maintenance and Support

We provide full-lifecycle maintenance and refurbishment services for all molds we manufacture. Our team offers 24/7 technical support and can assist with troubleshooting, spare parts, and mold repair to extend tool life and maintain production quality. We also provide documentation including mold drawings, maintenance schedules, and operational guidelines.

FAQ

What is your typical lead time for a custom mold?

Lead time varies based on complexity and cavity count. For standard precision molds, we typically deliver in 4-6 weeks after design approval. We provide a detailed schedule with our quotation.

Can you handle high-volume production orders?

Yes, our injection molding workshop has over 20 machines with clamping forces from small to large, and we support both small-batch and high-volume production with stable quality and on-time delivery.

Do you offer mold design services for new products?

Absolutely. We provide free DFM analysis and 3D mold design based on your product drawings or samples. Our engineers optimize the structure to reduce risks and costs.

What quality certifications do you have?

We follow international quality standards and our products comply with RoHS and REACH. We can provide material certificates and inspection reports as needed.

Can you produce two-color or multi-material molds?

Yes, we specialize in two-color injection molds for products like cups, toothbrushes, and handle housings, offering precise alignment and multi-material functionality.