Source Precision Machined Parts From Vetted Chinese Machine Shops.
We help overseas buyers source precision CNC machined parts from qualified Chinese manufacturers — with supplier audit, production follow-up, dimensional inspection and pre-shipment quality control. Your single point of contact on the ground.
Machined Parts Sourced With Precision.
Materials We Source
- Stainless steel
- Carbon steel
- Low & medium alloy steel
- Copper alloy
- Aluminum alloy
- Nickel & cobalt alloys
Machine Shop Audit
Every machine shop is vetted for capability, equipment, quality system (ISO 9001+) and relevant machining experience before we source from it.
Tolerance Guidance
We advise on realistic and cost-effective tolerances for your drawing, and match the right machine shop for each precision level and material.
Quality Control
Dimensional inspection, material verification, surface finish checks and pre-shipment release testing are coordinated against your specification.
Machined Parts We Source for Overseas Buyers.
We source precision machined components for shafts, gears, valves, pumps and custom OEM assemblies — matched to the right machine shop for each tolerance and finish requirement.
Shafts & Gears
Precision shafts, axles, gears and transmission components sourced with verified dimensional results.
Valve & Pump Parts
Machined stems, seats and housings sourced to your final specification.
Fittings & Flanges
Precision-machined flanges, connectors and coupling parts from vetted shops.
OEM / Custom Programs
Drawing-based sourcing with full technical coordination — small batches through to volume production.
CNC Machining Sourcing FAQs
How does GRDH Precision source CNC machined parts from China?
We evaluate your drawing and tolerance requirements, identify and audit qualified Chinese machine shops by capability, equipment and quality system, coordinate quotes and production orders, follow up on machining progress, and conduct dimensional inspection and pre-shipment quality control so you receive machined parts that meet your specification.
What machined materials can you source from China?
We source machined parts in stainless steel, carbon steel, low- and medium-alloy steel, copper alloys, aluminium alloys, nickel-based alloys and cobalt-based alloys, matched to machine shops with the right equipment and experience for each material group.
Do you audit the machine shops you source from?
Yes. Every machine shop is audited for manufacturing capability, equipment, quality management system (ISO 9001 and related certifications), relevant industry experience and project fit before we source from them.
What quality control do you provide on CNC machined parts?
We coordinate dimensional inspection against your drawing, material verification, surface finish checks, functional testing where required, and pre-shipment release inspection. First-article reports and inspection records are provided before release of goods.
What tolerances can you hold on sourced CNC parts?
Through qualified machine shops, we source parts holding linear dimensions to GB/T 1800.1-2009 grade 5-7 and form/position dimensions to grade 6-8. Where finer tolerances are required, we coordinate grinding or secondary finishing through vetted specialist shops. Learn more about CNC tolerances.
How long does it take to get a CNC machining sourcing quote?
Send your STEP or PDF drawing with material, quantity and tolerance requirements. We review the part, identify suitable machine shops, and typically return a transparent, itemized sourcing proposal within 24–48 hours.
Need a Trusted China Sourcing Partner for Machined Parts?
Send us your drawing. We’ll audit qualified machine shops, coordinate the right process, and come back with a transparent sourcing proposal within 24–48 hours.