Precision CNC Custom Machining Parts Manufacturer in China
JSAMT (Dongguan Dalang Jiangsheng Trading Firm) is a precision-focused metalworking team serving clients in automation, automotive and electronics industries across Malaysia, Vietnam and the world.
Making 'reliable' our standard
From receiving the drawing to delivering the part, every step is traceable. We may not be the biggest, but we aim for every part to meet spec.
We work mainly in aluminum, stainless steel, carbon steel, brass and engineering plastics, with tolerances down to ±0.005mm; 1-piece prototyping and small-to-medium batch customization, 7–10 days for prototypes and 12–18 days for batches.
Most clients are overseas (Malaysia, Vietnam, etc.), mainly in automation equipment, automotive parts, electronics & semiconductors and machinery — so we especially value response speed and delivery certainty.
Talk to Us
What we can do
Materials
Aluminum、Stainless Steel、Carbon Steel、Brass、Copper、Engineering Plastics
Processes
CNC Milling、CNC Turning、Mill-Turn、Drilling、Tapping
Finishing
Anodizing、Sandblasting、Plating、Passivation、Painting、Brushed
Industries
Automation Equipment、Automotive Parts、Electronics & Semiconductor、Machinery
Tolerances down to ±0.005mm; prototyping (7–10 days) and small-to-medium batch customization (12–18 days).
What's in the workshop
Machining Centers
Multiple 3-axis / 4-axis CNC machining centers covering high-precision machining of common metals and engineering plastics.
Inspection Equipment
CMM, height gauges, roughness tester; full inspection of critical dimensions with reports.
Auxiliary Processes
Welding, deburring and surface-treatment outsourcing network for end-to-end delivery from blank to finished part.
Why choose us
Fast Response
Inquiry replied within 24 hours; transparent prototyping schedule.
Stable Tolerance
Critical dimensions ±0.005mm, with inspection report.
Smooth Communication
English technical communication; engineers handle drawing/process issues directly.
Small Orders Welcome
From 1 piece; prototyping and small-to-medium batch customization.