How We Work

  • Receive Drawings
  • Offer Quotation
  • Arrange Sample
  • Confirm Order
  • Arrange Bulk Production
  • 100% Inspection before Shipment
  • Delivery by sea or by air
  • CMM Inspection
  • Visual Inspection
  • Microscope Inspection
  • Magnification Inspection
  • Dimensional & Gauge Inspection
  • Custom Machine Vision Inspection
  • On-site Labor & Inspection Services

Custom CNC Machining Parts

Precision CNC Machining Factory

About Topwio

Topwio Precision Machining Co., Ltd, an ISO 9001:2008 Certified Company, offer a full solution of precision china CNC machining services. Since 1998, as a professional supplier of CNC machining parts, milling parts, turning parts, laser cutting, aluminum die casting, metal stamping, plastic injection parts, etc, we have gained good reputation from worldwide clients who are in the automotive industry, aerospace industry, medical industry, defense industry.

Our Services

china cnc machining services

CNC Machining Service

  • Reduce Waste
  • One Stop Service
  • Creating Unique Parts

Rapid Prototyping

  • Safer Production
  • Cost Effectiveness
  • No Human Error Risks

Die Casting Service

  • Better Surface Finish
  • High Rates Of Production
  • Complex Shapes Within Closer Tolerances
stainless steel parts

Stainless Steel Parts

  • Corrosion Resistance
  • Recyclability Durability
  • 304,316,416,17-4 PH, Mild Steel
aluminum part

Aluminum Parts

  • Light Weight
  • 6061, 6061-T6, 6082, 7075
  • Excellent Electrical and Thermal Conductivity
brass parts

Brass Parts

  • Durable
  • Heat Resistance
  • Corrosion Resistance


Topwio controls,staff and equipment are the best we’ve seen in their industry.Top notch!Professional and personal service from initial enquiry to the delivery of parts!


Fast delivery,Good service,Prefect quality.The final parts are unsurpassed.Highly recommended!

Vincent USA