Custom Contract Manufacturing Service

From DFM analysis and tooling to production, assembly, packaging, and delivery, Jiangzhi provides complete contract manufacturing solutions for custom plastic and rubber parts.

Full-service contract manufacturer
30,000 sq ft facility with 6 production lines
In-house mold fabrication & mass production
Medium & High Volume Production
Quality-Controlled from Start to Finish

Manufacturing a custom component involves far more than simply producing a part. It requires coordinating tooling, molding, machining, assembly, packaging, quality control, and logistics—often across multiple suppliers. Managing these separate vendors increases complexity, cost, and lead time.

As a contract manufacturing partner, Jiangzhi simplifies this process by integrating these capabilities under one roof. Based on your drawings, specifications, or samples, we manage the manufacturing process from tooling and production to assembly, packaging, and delivery, providing one reliable partner for your entire manufacturing program.

Whether you are preparing a new component for production or scaling an existing project, we help simplify sourcing, reduce costs, and accelerate time to market.

Full-Service Contract Manufacturing & OEM Solutions

At Jiangzhi, we offer flexible manufacturing solutions across both contract manufacturing and OEM models. From material sourcing, mold design and plastic molding to assembly, packaging, and logistics, we providend-to-end manufacturing services tailored to your production needs.

Our integrated approach helps streamline operations, reduce costs, and shorten lead times—whether you're outsourcing components or launching a scaling production under your brand. With scalable capabilities and industry expertise, Jiangzhi is your reliable partner at every stage of the manufacturing journey.

Plastic Contract Manufacturing Capability

With over 40 years of expertise and experience in the production of plastic, rubber and metal components, our high level of production integration ensures cost competitiveness and a high level of quality control. We have the ability to combine multiple production processes to produce plastic, rubber, and metal parts as well as in-house integration of components into a range of assemblies.

Benefits of Working with a Contract Manufacturing Partner

Partnering with a contract manufacturing partner helps simplify sourcing, reduce operational complexity, and improve production efficiency. Instead of coordinating multiple suppliers, you work with one team that manages your manufacturing program from tooling to delivery.

Simplify Supplier Management: Work with one partner instead of coordinating multiple suppliers.
Lower Total Costs: Reduce investments in equipment, labor, and supply chain management.
Faster Time to Market: Integrated tooling, production, and assembly help shorten lead times.
Consistent Quality: Standardized processes and strict quality control ensure reliable production.
Flexible Production Capacity: Scale from prototype to high-volume production without changing manufacturing partners.

Contract Manufacturing Case Studies

Successful contract manufacturing is about more than producing individual parts—it's about managing the entire manufacturing process efficiently and consistently. From tooling and molding to assembly and final packaging, Jiangzhi delivers integrated manufacturing solutions that help customers simplify sourcing and scale production. Explore some of our custom component projects below.

Nylon Injection molding Plastic Enclosures — Injection molding Plastic Enclosures

TPU Injection Molding Pulley — TPU Molding Pulley

insert molding service — Insert Molding Gears

Plastic Automotive Parts — Custom Automotive Parts

Compression Rubber Moulding — Compression Molded Products

Our Manufacturing Capabilities

With over 40 years of manufacturing experience, Jiangzhi combines multiple production technologies to deliver complete component solutions. Rather than offering a single process, we integrate these technologies to manufacture complete products efficiently and consistently.

Plastic Injection Molding

Rubber Injection Molding

Large Part Injection Molding

Custom Overmolding Service

Insert Molding

Compression Molding

Cast Molding

CNC Machining

Why Choose Jiangzhi Your Contract Manufacturer?

As the rubber and plastic contract manufacturing market continues to grow, choosing a trusted supplier like Jiangzhi ensures your plastic manufacturing products meet the highest standards. We specialize in contract manufacturing plastic and rubber products with advanced injection molding capabilities and integrated support.

Strong integration ability

Our vertical integration ensures superior control over part and project lead times, streamlining the manufacturing process, minimizing delays, and elevating customer satisfaction.

Experienced engineering service

With a comprehensive team of experienced engineers, we utilize the latest tools for innovative solutions tailored to unique needs. We ensure seamless progress in industrialization-from project handover through DFM, samples, prototyping, mold design, and mass production.

Quality is priority

Quality is the top priority. We employ stringent quality control measures throughout the production process to guarantee that every product meets the highest standards.

Specialize in assembly

Specializing in light assembly, we excel in handling products of various complexities. With expertise and experience, we ensure the delivery of high-quality finished products, regardless of size, with precision and efficiency.

Logistics & fulfillment

We collaborate closely to create tailored logistics and fulfillment plans. Our support team manages forecasting, distribution, and offers customized packaging, labeling, and reporting, ensuring compliance with regulatory requirements.

Contract Manufacturing FAQs

Don't get your answer? Let’s jiangzhi answer for you!

Do you offer product design or development services?

No. We do not offer product design or development services. We focus entirely on contract manufacturing based on customer drawings, samples, or technical specifications.

What is your typical lead time for mold making and production?

Lead time depends on the mold type, part complexity, and order requirements. Generally, injection molds take around 30 days to complete, while other molds typically require around 20 days. Mass production is scheduled after sample approval.

What materials do you work with for plastic and rubber parts?

We work with a wide range of engineering plastics and rubber materials based on application requirements, including materials suitable for industrial, automotive, and general engineering use.

Do you provide assembly and packaging services?

Yes. We provide a range of secondary services, including product assembly, ultrasonic welding, drilling, tapping, surface finishing, logo printing, labeling, custom packaging, and retail-ready packaging to support complete product delivery requirements.

What industries do you typically serve?

We serve a wide range of industries, including automotive, industrial equipment, electronics, consumer products, and other OEM sectors. Our experience across different applications allows us to support a variety of custom plastic and rubber component manufacturing requirements, with the ability to adapt to different design changes, production conditions, and project requirements during manufacturing.