Precision CNC Machining & Rapid Prototyping from China

Since 2011, Smile RP Limited has delivered high-precision CNC machining, 3D printing, sheet metal, and injection molding services to global clients. From prototype to production — fast, reliable, and cost-effective.

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±0.02mm Tolerance

Ultra-precision machining for aerospace, medical, and robotics

Fast Delivery

Global shipping via DHL, FedEx, UPS — prototypes in 3-7 days

NDAs & IP Protection

Strict confidentiality for all client designs and data

About Smile RP Limited

Established in 2011 in Shenzhen, China, Smile RP Limited (Shenzhen Smile Precision Technology Co., Ltd.) is a trusted provider of precision manufacturing services. With over 15 years of experience, we specialize in CNC machining, 3D printing, vacuum casting, and sheet metal fabrication.

Since 2013, we’ve exported high-quality parts to clients across North America, Europe, and Asia. Our focus on reputation, quality, and customer satisfaction has helped us build long-term partnerships with engineering firms, startups, and OEMs.

We offer one-stop manufacturing solutions — from rapid prototyping to low-volume production — with strict quality control, including CMM measurement for every batch.

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Our Core Services

From aluminum CNC machining to 3D printing and silicone vacuum casting — we support your product development from concept to production.

Aluminum CNC Machining

High-precision milling and turning of 6061, 7075, and custom aluminum alloys. Tolerance: ±0.02mm.

• 3-axis & 5-axis CNC milling
• Anodizing, bead blasting, powder coating
• MOQ: 1 piece

Stainless Steel CNC Machining

Precision parts from SUS303, SUS304, carbon steel, and mold steel using CNC, EDM, and wire cutting.

• High corrosion resistance
• Polishing, passivation, plating
• Ideal for medical & food-grade applications

3D Printing Prototype

SLA, SLS, and MJF technologies for rapid polymer prototyping. Fast turnaround, high detail.

• Materials: ABS, TPU, PA12, resin
• Supports complex geometries
• Post-processing available

Sheet Metal Fabrication

Laser cutting, bending, punching, and welding for aluminum, steel, and copper sheets.

• Thickness: 0.5mm – 6mm
• Powder coating, anodizing
• Enclosures, brackets, chassis

Plastic Rapid Prototyping

Functional prototypes in ABS, PC, PMMA, and TPU. Fireproof and impact-resistant options.

• CNC, 3D printing, vacuum casting
• Surface finishes: matte, glossy, textured
• Ideal for consumer electronics

Metal CNC Lathe Processing

High-speed turning of shafts, discs, and cylindrical parts in steel, brass, copper, and titanium.

• Diameter: 1mm – 300mm
• Tight tolerances, smooth finishes
• Suitable for automotive & robotics

Silicone Rubber Vacuum Casting

Low-volume production of 1–50 copies using master models from CNC or 3D printing.

• Materials: PU, silicone, rubber
• Realistic textures and colors
• Cost-effective for small batches

Plastic Injection Molding

Custom molds and production runs for thermoplastics. From prototype to mass production.

• Mold life: 10K–100K shots
• Materials: ABS, PP, PC, PA
• Fast mold development

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Why Choose Us?

15+ Years Experience

Trusted by global clients for high-quality, reliable manufacturing since 2011.

High Efficiency

Fast turnaround from design to delivery — prototypes in as little as 3 days.

Strict Confidentiality

All projects protected under NDA — your IP is 100% secure with us.

Reputation First

We build long-term partnerships based on trust, quality, and service.

What Clients Say

"Hello Steven, got the prototypes — they look great. You did a nice job. We have more projects coming soon."

James L., USA

Automotive R&D

"Dear Steven, we like the prototypes very much. Thanks for your job. You have rich experience to solve our design problems."

Mark T., Germany

Medical Devices

"Hi Steven, it was faster than expected. Congratulations! I confirm the order. Will send official PO soon."

Anna K., UK

Consumer Electronics

"Perfect, thank you. I understand the competitive price. It’s important to keep suppliers like you with a good partnership."

Robert P., Canada

Industrial Automation

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