Our products have obtained ISO13485 certification for medical industry and ISO 9001 certification.The medical-grade product standard strictly controls the high quality and high precision of the product, ensuring that it always remains at a high standard level.

Rapid Quotation and Flexible

Small-Batch Production

Upload your component documents and we will provide you with an online quotation service within 8 hours.Our minimum order quantity is 1. We offer services ranging from rapid prototype to batch customization.

Professional Engineering Team & Free Quality Inspection Reports

Our team of 12 experienced engineers provides prompt technical support, while our quality control department issues complimentary inspection and material testing reports for every order, ensuring all parts meet the high standards.

Turn your ideas into reality with our excellent on-demand manufacturing services to produce simple and complex prototypes and final parts, all of our products meeting strict tolerances and quality requirements.

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Production

Quality Inspection

Delivery

Upload files-Fill in your information and upload your CAD file to obtain a quotation.

Engineers evaluate the quotations and delivery schedules based on your drawings.

We will prepare the raw materials according to your order and start the production process.

Quality inspection and packaging - The quality inspection department will inspect the condition of your finished products and carefully pack them.

Delivery on time.

Get 3-day standard lead times on simple parts between 10 mm x 10 mm and 200 mm x 200 mm.Upload your part to see if it’s eligible.

PROTOTYPES AND PARTS MADE EASY

Finished Product Accuracy

Finished Product Accuracy

Our factory is equipped with 3-5-axis CNC precision processing equipment (cnc milling or cnc turning,etc). For custom components with high precision requirements, we can meet the maximum tolerance of “±0.0004”, and the three-coordinate measuring instrument also ensures the high precision requirements for product inspection.

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On-Demand Production

On-Demand Production

The 24/7 online customer service can ensure that your quotations are promptly responded to(Our quotation will be available within 8 hours). The factory is equipped with 4 quotation engineers who can meet your demand for prompt quotation responses.

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Small Batch Customization Support

Small Batch Customization Support

We fully support the customized processing services for small batches of components. Whether it's CNC processing, prototyping, design, etc., our minimum order quantity is 1. The delivery time for small batches is generally around 15 days.

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FIRST-RATE SERVICE TO MEETS YOUR VISION

YOUR IDEA MATTERS,SO AS PRODUCT QUALITY

From production to quality inspection, packaging, and even for the more complex products, we provide you with high-quality services throughout the entire process.

Quality Inspection Department Picture Display

Completely And Meticulously Packaged Display

Presentation Of Complex And Unconventional Parts

High-Precision 5-Axis Cnc Processing Equipment

A CUSTOMER’S WORDS MEAN MORE THAN OURS

John S., USA · 2024-10-15

“Great service, competitve prices, quick production & excellent quality. I'll definitely be using Donguan RENJIE again!”

Patrick L., USA · 2025-4-03

“I’m very pleased the service and quality they provide.”

“After field inspection of the factory, the comprehensive strength is very strong for our requirements will have feedback, and in the middle of processing will also submit the real-time delivery status of our products, a very good factory.”

David M., USA · 2024-12-12

See what our satisfied customers have said about how we fulfilled their requirements.

DELIVERY TIME EXPLANATION

Rapid Prototyping

Small Batch Production

Mass Customization

We provide rapid prototyping within 3–5 days to help you validate designs quickly.

Small batch orders can be completed in just 2–3 weeks with guaranteed quality and precision.

The production delivery cycle for large quantities needs to be determined based on specific circumstances.Based on quantity and materials, mold production can be carried out to reduce costs.

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Dongguan Renjie Precision Machinery Co. Ltd.

Dongguan Renjie Precision Machinery Co. Ltd.is a professional manufacturer of customized precision spare parts established in 2011.After more than ten years of precipitation the company now has a professional and responsible machining production team,of which the average working time of the core team personnel is more than 15 years, and has developed into a comprehensive precision parts machining manufacturer integrating design,production and assembly.

The company has passed lS09001,IS013485 quality system certification,service industries are medical, aviation, automotive,semiconductor,optics,new energy,precision automation machinery and other industries.

In order to ensure the accuracy and quality of products, the company is equipped with five-axis link age machining center turning and milling compound, drilling and tapping machine CNC machine tools,CNC lathes, qeneral turning, milling machine grinding machine,coordinate detector, quadratic element, height meter and other advanced processing equipment and testing equipment.

Who We Are

ABOUT US

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FAQS

Q:What are your lead times?

A:Our standard lead times are 2-3 weeks but we can accommodate expedited orders. Quick-turn prototypes can be done in 3-5 days.

Q:What tolerances can you hold?

A：We can routinely hold tolerances of +0.01mm and can achieve ±0.0004" or better for critical features.

Q:What materials can you machine?

Our production team has extensive experience in the characteristics and processing techniques of various materials. Our products include: special steel series, titanium alloy series, grinding tool steel series, stainless steel series, CR steel series, copper material series, aluminum alloy series, PEEK, ABS, PC, acrylic, plastic materials, etc.

Q:Could you provide the material information and quality inspection report?

Yes, we provide full material information and quality inspection reports for all parts to ensure they meet your specifications.

Q:Does the service include surface treatment and post-processing services (such as polishing, spraying, etc.)?

A:Yes, our services include surface treatment and post-processing such as polishing, coating, and other finishing options.

Q:How many CNC machines with axes do you have?

A:We are equipped with 20+ CNC machines, including 3-axis, 4-axis, and 5-axis equipment to handle various precision machining needs.

Precision Machining Service Inquiry

Have Any Questions? Get in Touch With FINE INDUSTRIES Now!

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Click the quotation button on the homepage or navigation bar to get a quick quote. You need to fill in your relevant information (name, country, email) and upload the drawings. The supported file formats include jpg, pdf, png, bmp, doc, zip, rar, dwg, xisx, excel. Our response time for quotations is within 8 hours. Our engineer will reply to your message soon!

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