Precision Molds. Quality Parts. Honest Pricing.
Your one-stop OEM partner for the whole product — from concept, design and prototyping to injection molding, metal parts and final assembly.
Why Choose RJ Mold
Mold + Molding, Both In-House
We make our own molds and run our own injection machines — so the moment a mold is finished, we can trial it and start production immediately. Fast iteration, faster delivery.
Engineer-to-Engineer
No sales middlemen. You talk directly to our engineers — a founder-led team with 10+ years in injection molding — so your requirements are understood the first time and your project moves twice as fast.
High-Temp Precision Molding
We specialize in high-temperature precision engineering plastics such as PEI, PSU, PPS and PPO — a technical barrier most factories can't cross. Precision parts where others struggle.
Plastic + Metal, One Supplier
Your product is more than plastic. We machine precision metal parts in-house, and manage stamping and die-casting through vetted partners — one point of accountability for quality and delivery across the whole product.
CNC
In-House Machining
Injection
In-House Molding
PU Foam
In-House Foam Line
30 Days
Typical Mold Lead Time
Our Services
Mold Making
Injection molds and PU foam molds. DFM report, mold flow analysis and full 3D mold design included. Mold steels: P20, 738H, 718H, 2343, 2344, 8418, S136, NAK80 and more — customers may specify the mold steel.
Injection Molding
In-house injection molding machines. Engineering plastics, high-temp materials, multi-cavity. Small-batch trial runs and mass production.
PU Foam Molding
Self-skinning PU foam. Hardness customizable on request. Custom colors available. For insulation, cushioning and more.
CNC Machining & Metal Parts
In-house CNC machining for precision metal parts — mold cavities, electrodes and custom components. Stamping and die-casting handled through our vetted partner network, with quality and delivery managed by us.
Prototyping & Product Development
Concept to working prototype. We build prototypes on our in-house CNC (partly through partners) and help design for manufacturability, so you validate your product before committing to tooling.
Inside Our Factory
Ready to Start Your Project?
Send us your 3D file (STEP/IGS/STP) or drawing, and we'll return a quote within 24 hours.