From rapid prototypes to 100,000-piece production runs, Rejin CNC delivers milled, turned and 5-axis machined parts with strict quality control and on-time delivery. Free DFM review and a detailed quote within 24 hours.
Six core manufacturing services, one accountable engineering team.
3/4/5-axis vertical machining for housings, brackets, plates and complex 3D contours with high-speed spindles and in-process probing.
Multi-axis turning for shafts, pins, sleeves and connectors. Live tooling enables mill-drill cross-features in a single setup.
Single-setup machining of impellers, blades and complex cavities. Eliminates repeated fixturing and holds micron-level accuracy.
Laser cutting, bending and stamping for enclosures, brackets and chassis. Computer nesting reaches 90%+ material utilization.
Anodizing, bead blast, powder coat, plating, passivation, silk screen and laser marking — one supplier for finished parts.
Free DFM feedback, FAI/PPAP on request, CMM inspection on every batch. We flag tolerance issues before you cut tooling.
Stocked and sourced. Tell us your requirement — we recommend the most cost-effective alloy.
6061-T6, 6063, 7075-T6, 5052 — lightweight, anodizable.
303, 304, 316L, 17-4 PH — corrosion resistant, medical-grade.
C36000 brass, C110 copper — excellent machinability.
Gr2, Gr5 (Ti-6Al-4V) — high strength-to-weight, aerospace.
1045, 4140, P20, H13 — structural parts and tooling.
ABS, PC, POM, PEEK, acrylic — lightweight insulating parts.
AZ31B magnesium, Zamak — ultra-light enclosures.
Inconel 718, Hastelloy, Kovar — high-temperature parts.
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.
Not stock photos — actual machined components shipped to audio, 3C, automotive and medical customers.
Stainless 303/316, diameters Ø2–50 mm, Ra 0.2 µm finish. Used in sensor and micro-motor assemblies.
6061-T6 milled and Type II anodized. Port holes, knurled knobs, laser-etched logos — fully in-house.
Extruded 6063 aluminum, fly-cut and tapped. Custom fin pitch and base thickness for power electronics.
52100 bearing steel, hardened and ground. Races, balls and shafts for precision rotary applications.
Titanium Gr5 and stainless 316L. Passivated, traceable lot numbers, cleanroom packaging on request.
IATF 16949 process. H13 tooling, 4140 and 17-4 PH. PPAP Level 3 on request.
200+ CNC machines on the floor. Here is exactly what we run and how fast we ship.
Mazak, DMG Mori, Brother. Travel up to 1200 × 600 × 500 mm. In-process probe on every machine.
Citizen L20/L32, Mazak Quick Turn. Live tooling, bar feed to Ø42 mm, chucking to Ø300 mm.
DMG DMU 50, Mazak Integrex. Single-setup impellers, blades and complex aerospace housings.
DFM feedback + detailed quote within one business day. Rush DFM in 4 hours for critical projects.
1–10 piece prototypes ship in 3–7 days after drawing approval. Expedited 24-hour option available.
100–10,000 piece batches. Weekly progress photos and inspection reports at every milestone.
A transparent five-step flow — a real engineer replies at every stage.
Upload STEP / IGES / DWG + quantity
We flag tolerance & cost risks
Detailed quote within 24 h
First parts + FAI inspection
Batch run + shipping updates
Verify critical dimensions, hole positions and complex GD&T geometric tolerances via professional CMM equipment. Full 3D scanning avoids assembly defects for complex machined components.
Continuous in-process dimensional testing with precision measuring tools. Early defect identification minimizes scrap risk during mass OEM production.
Strict inspection on surface finish, scratches, burrs and coating defects. Meet strict appearance requirements of aluminum alloy housings.
Standardized first article inspection before mass production. Deliver formal FAI reports to stabilize dimensional consistency for bulk orders.
Complete material certification & batch records. All machined parts can trace back to raw material source for IATF 16949 automotive compliance.
Comprehensive final functional inspections to identify hidden defects that dimension testing cannot catch, guarantee stable part performance.
Neutral salt spray chamber evaluates anti-corrosion performance of anodized, plated and coated CNC parts, verifying long-term outdoor and humid-environment durability to ASTM B117 standards.
Simulate real-world working conditions — temperature cycling, vibration and repeated load — to verify long-term mechanical reliability and prevent premature field failure of precision machined components.
Fully certified quality management system. Every batch ships with material certificates and inspection reports you can trust.
Our engineers review every drawing upfront — flagging tolerances, undercuts and cost drivers before a single chip is cut.
Custom foam, wooden crates and FBA-ready packaging. Door-to-door freight to 60+ countries with full tracking.
Your message lands directly with our senior engineers — instantly acknowledged.
We study your requirements and propose a workable solution with material & process options.
Detailed quotation with specs, options and lead time — no hidden fees.
Approve the sample, then we mass-produce with full QC and on-time shipping.
WhatsApp: +86 13790500374
Email: info@rejincnc.com
Your CAD files are kept strictly confidential. Quotation within 24 hours.