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Ningbo Renjiu Machinery Co., Ltd.

About Us

Ningbo Renjiu Machinery Co., Ltd.

Ningbo Renjiu Machinery Co., Ltd. is a professional manufacturer specializing in precision hardware parts processing and automated equipment manufacturing. Located in Ningbo, a well-known coastal manufacturing city in China, we integrate design, production, customization and sales, providing one-stop precision machining solutions for global customers.

We are equipped with advanced production equipment and strict quality control systems, committed to high-precision, high-stability and cost-effective mechanical parts and automated equipment. 

Our Advantage

Why Choose Us

Customized Service

Precision processing of metal and plastic parts, apply for electrical appliances, automobi

Advanced Machining Workshop

CNC Milling, CNC Turning, Injection Molding, Sheet Metal Cutting and Bending, ensure preci

Strict Inspection

Professional QC inspector team, full inspection before shipment

One-stop Service

Services from Design assistance, DFM report, CNC Machining Processing, Surface treatment.

Our products

Our Popular Product

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Energy storage solutions in today's rapidly evolving energy landscape.

Our Services

What We Do?

Ningbo Renjiu Machinery Co., Ltd.

CNC Machining

We provide high-precision CNC machining services tailored to meet the demanding requirements of modern industries. With advanced CNC lathes and CNC milling machines, we ensure accurate, consistent, and efficient production for both small and large batches. Our machining capabilities support complex geometries and tight tolerances, delivering reliable performance for critical applications.

Materials: We work with a wide range of materials including aluminum alloys, stainless steel, brass, copper, and engineering plastics such as POM, ABS, and PEEK. Each material is carefully selected and processed to ensure durability, strength, and optimal performance based on customer requirements.

Equipment: Our facility is equipped with advanced CNC lathes and high-speed CNC milling machines, enabling us to handle precision turning, milling, drilling, and custom machining processes with high efficiency and accuracy.

Application: Our CNC machined components are widely used in aerospace, medical equipment, automotive precision parts, automation systems, and various industrial applications where quality and precision are essential.

3D Printing

We offer advanced 3D printing solutions to support rapid prototyping and product development. Our services help clients accelerate design validation, reduce development time, and achieve cost-effective production of complex parts with high accuracy and efficiency.

Processing Technologies:

- SLA (Stereolithography): Ideal for high-precision models, smooth surface finishes, and appearance verification. Commonly used for display samples and detailed prototypes.

- SLS (Selective Laser Sintering): Suitable for producing durable and functional parts with excellent mechanical strength, making it ideal for industrial applications.

Materials: We support a wide range of materials including resin, nylon, ABS, stainless steel, aluminum alloy, and other engineering-grade materials to meet diverse project requirements.

Applications: Our 3D printing solutions are widely used for structural verification, functional prototyping, and product development stages. They enable faster iteration, design optimization, and efficient transition from concept to production.

Ningbo Renjiu Machinery Co., Ltd.
Ningbo Renjiu Machinery Co., Ltd.

Injection Molding

We provide high-quality injection molding services for the efficient production of complex plastic components. With advanced molding technology and strict quality control, we ensure consistent results, smooth finishes, and cost-effective manufacturing for both small and large production runs.

Materials: We process a wide range of engineering plastics including ABS, PC, PP, PA, POM, TPU, and TPE. Each material is selected based on product performance requirements such as strength, flexibility, durability, and heat resistance.

Advantages:

- Excellent surface finish with minimal post-processing

- Capability to produce complex and intricate structures

- High production efficiency for large-volume manufacturing

- Support for two-color molding and overmolding (rubber + plastic)

Applications: Our injection molded products are widely used in electronic housings, home appliance components, medical accessories, automotive interior parts, and various industrial applications requiring precision and durability.

Vacuum Casting

We offer high-quality vacuum casting services for rapid prototyping and low-volume production. This process is ideal for producing detailed, high-fidelity parts with excellent surface finish and material flexibility, making it a cost-effective alternative to injection molding during early-stage product development.

Processing Workflow: Master model creation (typically using SLA 3D printing) → Silicone mold fabrication → Vacuum casting under controlled conditions → Curing and finishing of final parts. This streamlined process ensures accurate replication of original designs with high consistency.

Materials: We use a variety of casting materials including PU resin, soft rubber, and transparent resins, allowing us to simulate different mechanical properties such as rigidity, flexibility, and clarity depending on project requirements.

Application: Vacuum casting is widely used for appearance prototypes, functional testing samples, market validation models, and small-batch production parts. It is especially suitable for industries requiring fast turnaround and high-quality prototype validation before mass production.

Ningbo Renjiu Machinery Co., Ltd.
Ningbo Renjiu Machinery Co., Ltd.

Sheet Metal Fabrication Service

We provide precision sheet metal fabrication services for a wide range of industrial applications. With advanced processing equipment and skilled manufacturing capabilities, we deliver durable, accurate, and cost-effective metal components tailored to customer requirements.

Materials: We work with high-quality materials including cold-rolled steel plates, stainless steel, aluminum sheets, and copper plates, ensuring excellent strength, corrosion resistance, and long-term performance.

Processing Capabilities: Our sheet metal services include laser cutting, CNC punching, precision bending, welding, and assembly. These processes allow us to produce complex structures with high accuracy and consistent quality.

Key Features:

- Cost-effective manufacturing solutions

- Flexible production from prototypes to large batches

- Strong structural stability and durability

- High precision with clean finishing

Die Casting

We provide high-precision die casting services for the production of complex metal components with excellent consistency and durability. Our advanced casting capabilities ensure high-quality results suitable for demanding industrial applications.

Molding advantages:

- High dimensional accuracy with excellent surface finish

- Ideal for complex and thin-walled structural parts

- Strong mechanical strength suitable for load-bearing applications

- Efficient production for medium to large batch manufacturing

Application: Our die-cast components are widely used in automotive parts, LED heat sinks and radiators, industrial connectors, motor housings, and other precision-engineered industrial products.

Ningbo Renjiu Machinery Co., Ltd.

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