Focusing on Prototyping and Low-Volume Manufacturing.
Our Custom Injection Molding Services
Utilizing RapidDirect’s injection molding solutions in China, we shape plastic parts based on part size, intricacy, and volume requirements. On-demand prototypes and production runs are made possible with machines ranging from 30t to 1800t, ensuring every design’s accuracy. Benefit from free design consulation on each injection molding order. Expect quick turnarounds with lead times as short as 15 days.
Custom Injection Molded Products by RapidDirect
View the plastic prototypes and on-demand production parts we’ve manufactured for our customers.
Sheet Metal Manufacturing
Sheet metal, a processing technology, has not yet had a relatively complete definition of sheet metal. According to the definition in foreign professional journals, it can be defined as: sheet metal is a comprehensive cold processing process for meta...
Plastic Injection Molding
Injection molding allows us to make prototype injection molded parts in production thermoplastic resins. These parts are available for final sign-off, full functionality, fit testing and sales launch. Our company is a professional plastic injection m...
Vacuum Casting Services
Vacuum casting can be used to accurately simulate final injection molded parts and/or finished products - quickly and inexpensively. Urethane castings and/or finished products can be completed and delivered within days of SRM tooling (urethane silico...
Metal Surface Finishing
What is surface treatment? Surface treatment is a method of artificially forming a surface layer with different mechanical, physical and chemical properties from the substrate on the surface of the substrate. The purpose of surface treatment is to me...
Metal CNC Machining Services
GF-PROTO specializes in CNC machining. We use advanced equipment to provide you with various CNC machining services, including CNC milling, CNC turning, EDM, wire cutting, surface grinding and so on. We have imported cnc 3-axis machining, cnc 4-axis ...
Plastic CNC Service
GF-PROTO's CNC machining capabilities allow us to produce state-of-the-art, highly accurate visual design models, fully functional engineering prototypes or master models. Fast turnaround and high accuracy of vision models can be achieved using a var...
Rapid Prototyping & small batch production
GF-PROTO is a professional prototype and mass production manufacturer in China. We specialize in high quality rapid prototyping and cheap mass production manufacturing services We can make all kinds of metal and plastic prototypes and products. Our p...
Metal 3D Printing Service
3D printing is used in many prototyping applications. 3D printing is usually achieved using digital technology material printers. It is often used to make models in the fields of mold manufacturing and industrial design, and is gradually used in the ...
Sheet Metal Manufacturing
Sheet metal, a processing technology, has not yet had a relatively complete definition of sheet metal. According to the definition in foreign professional journals, it can be defined as: sheet metal is a comprehensive cold processing process for meta...
Plastic Injection Molding
Injection molding allows us to make prototype injection molded parts in production thermoplastic resins. These parts are available for final sign-off, full functionality, fit testing and sales launch. Our company is a professional plastic injection m...
Vacuum Casting Services
Vacuum casting can be used to accurately simulate final injection molded parts and/or finished products - quickly and inexpensively. Urethane castings and/or finished products can be completed and delivered within days of SRM tooling (urethane silico...
Metal Surface Finishing
What is surface treatment? Surface treatment is a method of artificially forming a surface layer with different mechanical, physical and chemical properties from the substrate on the surface of the substrate. The purpose of surface treatment is to me...
Metal CNC Machining Services
GF-PROTO specializes in CNC machining. We use advanced equipment to provide you with various CNC machining services, including CNC milling, CNC turning, EDM, wire cutting, surface grinding and so on. We have imported cnc 3-axis machining, cnc 4-axis ...
Plastic CNC Service
GF-PROTO's CNC machining capabilities allow us to produce state-of-the-art, highly accurate visual design models, fully functional engineering prototypes or master models. Fast turnaround and high accuracy of vision models can be achieved using a var...
Rapid Prototyping & small batch production
GF-PROTO is a professional prototype and mass production manufacturer in China. We specialize in high quality rapid prototyping and cheap mass production manufacturing services We can make all kinds of metal and plastic prototypes and products. Our p...
Metal 3D Printing Service
3D printing is used in many prototyping applications. 3D printing is usually achieved using digital technology material printers. It is often used to make models in the fields of mold manufacturing and industrial design, and is gradually used in the ...
What to Get From Online Injection Molding Services
Upload your design on RapidDirect’s online platform and request for an injection molding quote. Within a day, get precise pricing and DFM insights after our 3D CAD review. We identify machining challenges and analyze mold flow, guaranteeing impeccable product quality. Navigate complex projects with our clear, user-friendly platform.
Bulk Pricing
Online Annotation
All-in-One Project Management
Team Collaboration
Upload your design and instantly annotate areas of concern. No more back-and-forths; real-time live chat ensures our engineers address and resolve queries instantly, elevating your injection molding project’s efficiency.
Custom Injection Molding Solutions
Explore our on-demand injection molding solutions to seamlessly transition from prototyping to high-quality production.
Injection Molding Materials
RapidDirect offers common metals for injection molding tooling, and a variety of popular plastic materials.
Injection Mold Tooling Materials
Thermoplastic
Thermoset
Note: You can learn more from our eBook on plastic materials.
Injection Mold Surface Finishes
We primarily offers SPI finishes for plastic injection molds. For VDI textures, specify your requirements when submitting your quote on our platform.
| SPI Finish Standards | Surface Roughness RA (mm) | Finishing Method | Texture | Steels Recommended |
| SPI A1 | 0.012 to 0.025 | 6000 Grit Diamond | Super High Glossy finish | S136 (54HRC) or 8407(52HRC) |
| SPI A2 | 0.012 to 0.025 | 3000 Grit Diamond | High Glossy finish | S136 (54HRC) or 8407(52HRC) |
| SPI A3 | 0.05 to 0.10 | 1200 Grit Diamond | Normal Glossy finish | S136 (300HB) or 718H |
| SPI B1 | 0.05 to 0.10 | 600 Grit Paper | Fine Semi-glossy finish | 718H |
| SPI B2 | 0.10 to 0.15 | 400 Grit Paper | Medium Semi-glossy finish | 718H |
| SPI B3 | 0.28 to 0.32 | 320 Grit Paper | Normal Semi-glossy finish | 718H |
| SPI C1 | 0.35 to 0.40 | 600 Grit Stone | Fine Matte finish | 718H |
| SPI C2 | 0.45 to 0.55 | 400 Grit Stone | Medium Matte finish | 718H |
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