–We are a 20+ Years Professional Custom Metal & Plastic Parts Manufacturer in China.
Rapid Protos (RPS) is a one-stop prototype and parts manufacturing expert, providing a full range of services including CNC machining, 3D printing, sheet metal fabrication, vacuum casting and surface treatment.
RPS has more than 100 senior engineers and more than 80 advanced machines capable of processing more than 50 metals and plastics. We work with more than 50 ISO9001 certified factories, and conduct strict quality control from raw materials to delivery to ensure on-time delivery of products and quick response to customized needs. RPS is your trusted partner in industrial manufacturing!
Our Latest Projects
Focusing on precision manufacturing, RPS has cooperated with customers in different fields around the world for many years. Whether it is precision aerospace parts or innovative consumer electronics components, we can deliver them accurately. With professional technology and efficient services, we help customers’ projects to advance steadily and achieve success.
Why Rapid Protos ?
A Manufacturing Partner You Can Trust
Rapid Protos for Awesome Project Creations
Our Capability
We have comprehensive capabilities from rapid prototyping to low-volume manufacturing. Using advanced manufacturing technologies and high-precision equipment from Japan, the US, Germany, etc., we offer fast manufacturing of high-quality precision parts. We meet prototyping needs (1-50 pcs, 3-7 day lead time) and on-demand low-volume production (50-10,000 pcs, 7-30 day lead time, no MOQ), support various materials and customization, help customers speed up product development, cut costs, and provide global logistics services.
Our Services
Surface Finishing Options
After the parts are processed, the surface treatment is carried out to form a unique surface layer to meet the hardness, corrosion resistance, and appearance requirements of the product. The choice of surface treatment depends on the material properties and application of the part. RPS offers the following surface treatment options for CNC-machined metal parts:

Anodizing can improve the corrosion resistance of aluminum alloys, increase the surface hardness and wear resistance, and have a good appearance after the coloring surface treatment.

Powder coating is a type of coating that is applied as a free-flowing, dry powder. Unlike traditional liquid paint, which is applied with an evaporating solvent, powder coating is typically applied electrostatically and cured with heat or ultraviolet light.

Black oxide, or blackening, is a conversion coating for ferrous metals, stainless steel, copper and copper-based alloys, zinc, powdered metals, and silver solder. It produces an oxide film on the metal surface to add modest corrosion resistance, improve appearance, and reduce light reflection. Black oxide must be treated with oil or wax to provide maximum corrosion resistance.

Bead blasting produces a smooth, matte-textured surface, and sharp edges can be broken and deburred for safe handling. Bead blasting can also improve the mechanical strength, wear resistance and corrosion resistance of parts.

Electroplating is the process of coating an object in a layer of metal using electrodeposition. Electroplating is widely used to improve the surface qualities of metals, such as resistance to abrasion and corrosion, lubricity, reflectivity, and electrical conductivity. Electroplating can also make metals look better.

Polishing is a technique for creating a smooth and shiny surface by rubbing it or applying a chemical treatment. The process creates a surface with significant specular reflection, but it can also reduce diffuse reflection in some materials.

Brushing is a surface treatment process in which an abrasive belt is used to draw marks and lines on the surface of products to achieve a decorative texture.

Accurate Quotation, No Hidden fees
Instant, Online Quotes
How We Calculate Prices ?
After reviewing your CAD design drawings, we will select the most appropriate manufacturing process based on product structure, materials, order quantity and precision requirements, and simulate the manufacturing process, calculate material costs, processing time of each process, etc., and finally generate an accurate product manufacturing cost quotation.
No hidden fees. Our quotations are actual prices, including shipping and tariffs.
The Rapid Protos Quality Standard
Guaranteed quality, every time.
How We Work?
Start Your Prototyping & Manufacturing Process with Us in Just 4 Simple Steps

Widely Application
RAPID PROTOS (RPS) is a leading provider of rapid prototyping services and low-volume manufacturing services for mission-critical applications in the Aerospace, Automotive, Medical & Life Science, Oil & Gas, Food and Beverage industries, Semiconductors, and more.
Trusted Clients
Customer Reviews
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