From DFM engineering to finished parts — CNC turning, 3-axis, 5-axis milling and surface treatment under one roof. ISO 9001 & IATF 16949 certified. Expert in aluminum, stainless, brass & engineering plastics for audio, 3C electronics and industrial applications.
Missed deadlines, silent suppliers, quality drift — we solve the problems that actually keep procurement managers up at night.
Every batch ships with CMM first-article reports, in-process probing and dimensional inspection — not just "OK, shipped."
200+ owned CNC machines in Dongguan. Your order isn't passed between brokers — we control scheduling, tools and capacity.
No sales rep chasing quotes. A DFM engineer reviews your CAD, flags issues and sends a detailed quote — often same day.
One roof: CNC machining, surface treatment and assembly. You pay for actual manufacturing, not three layers of suppliers.
Rejin CNC delivers tight-tolerance CNC machined housings, brackets and structural components across audio, consumer electronics, automotive and thermal management. Our IATF 16949 certified shops hold ±0.005 mm tolerance with in-house anodizing and CMM inspection — from rapid prototype to stable mass production.
One-stop CNC machining: turning, milling, 5-axis machining and surface finishing under one roof. In-house anodizing, sandblasting and full-lifecycle QC — no middlemen, no quality drift between suppliers.
Functional and cosmetic finishes applied in-house or through vetted partners.
Type II protective anodize, natural silver finish.
Type III hard coat, wear-resistant black.
Blue, red, gold, green dye for audio and 3C.
Uniform matte texture, hides machining marks.
Durable corrosion-resistant RAL colors.
Removes free iron, boosts stainless corrosion.
Zinc, nickel, chrome, tin for connectors.
Permanent non-contact logos and serials.
Every batch ships with the documentation your QA team needs — and our engineers stand behind it.
Full dimensional reports on the first part and at key production milestones.
Mill certificates and lot tracking on every raw material we receive.
Signed before quoting. Encrypted storage, files never reused or shared.
Automated in-machine measurement reduces human error and scrap.
In-house stock for 8 engineering alloys lets us start your job in days — not weeks — while holding ±0.005 mm critical tolerances.
200+ CNC machines, an in-house QC lab and a full finishing line — all under one roof in Dongguan.
