Custom thermoplastic injection molding from our China factory. Recyclable resins, tight tolerances, and a factory-direct quote within 24 hours.
The problem
Late tooling, warped parts, and three suppliers who blame each other. You need one factory that owns the whole job.
With YiguProto as your China manufacturer and supplier, you get one accountable partner from quote to delivery.
Quick facts
The basics
Thermoplastic molding is simple. Plastic pellets are heated until they melt, pushed into a steel mold, and cooled back into a solid shape.
Think of an ice cube. Melt it, freeze it, melt it again. The plastic can be reshaped and reused. That is what makes thermoplastics recyclable.
It is also the fastest way to make large numbers of identical plastic parts. Once the mold is built, every part takes seconds.
Runners and scrap can be reground and used again. Less waste and a lower material bill.
A high strength-to-weight ratio. Good for handheld devices, moving parts and portable gear.
Parts drop out in seconds, not minutes. That is why molding gets cheaper as volume grows.
Smooth, textured or glossy, straight out of the mold. Often no extra finishing step is needed.
Capabilities
Real numbers, so you can spec your part with confidence.
| Feature | Capability |
|---|---|
| Materials | PP, ABS, PC, PA, POM, PEEK, PBT, PS, PMMA, TPE |
| Press range | 50T to 1000T |
| Molding tolerance | ±0.02 mm (0.0008 in) |
| Mold type | Steel or aluminium, single or multi-cavity |
| Surface finish | SPI finish, texture, gloss, matte, painting |
| Volumes | Low-volume bridge runs to 500,000+ parts |
| Lead time | 12 to 20 business days |
| Quality | ISO 9001:2015 managed, CMM and FAI reports |
Materials
Not sure which resin fits your part? Tell us what it must do and we will suggest one.
ABS
Rigid and easy to finish. Housings and enclosures.
ABS details →PEEK
High heat and chemical resistance. Medical and aerospace parts.
PEEK details →One-stop service
Complete molding solutions from one factory. No handoffs between vendors, and no parts stuck in someone else's queue.
In-house mold making. Steel or aluminium, built for your volume and your budget.
Soft grips on hard plastic, or metal inserts molded in place. One shot, no extra assembly.
Painting, pad printing, texture and SPI finishes, all done after molding.
We assemble, label and pack your parts, so they arrive ready to use or ship.
Industries
We mold parts for teams that cannot afford a bad batch.
Cost control
Most of your part cost is decided before the first shot. Our engineers check all four for free.
Thick and thin walls in one part cause sink marks and longer cycles. Even walls fix both.
One or two degrees helps the part release cleanly and stops drag marks on the sides.
Every undercut needs a side action. Remove one and the mold gets simpler and cheaper.
Paying for PEEK when PP will do is wasted money. We match the resin to the job.
Why engineers trust us
A real factory stands behind every quote. Here is what that means for you.
10+ years molding plastic parts in Dongguan, China. 200+ staff, with tooling and molding in-house.
Engineers who know shrinkage, warpage and gate placement. Free DFM report with every quote.
A factory you can audit. Come and visit our company in Dongguan, China, or send your own inspector before production.
NDA on request. Your mold and your design stay yours. Itemized prices with no hidden fees.
How it works
No account needed. No long forms. Just send the files you already have.
Upload STEP, STP, IGES, STL or a PDF drawing. Tell us the resin and the volume.
You receive an itemized price, a lead time and a free DFM report.
We make or fit the mold, run the parts and inspect them in-house.
Worldwide shipping with tracking, photos and inspection reports.
FAQ
Need a fast answer? Message us and we usually reply within minutes.
+86 150 1712 6694