CNC machining, 3D printing, sheet metal, injection molding, and vacuum casting — all from one Shenzhen facility. Tolerances to ±0.005 mm. DFM review with every quote.
One facility. Eight processes. CNC machined prototypes, injection molded parts, sheet metal assemblies, and additively manufactured components — handled in-house from first file to final shipment.
Every part is produced in our own Shenzhen facility. Your engineer handles the file. Our engineer makes the part. No third-party shop involved on standard orders.
Upload your file and receive instant pricing for standard geometries. Complex parts get an engineering review within 24 hours — including DFM notes on wall thickness, radii, undercuts, and tolerance feasibility.
Every shipment includes a dimensional inspection report, material certifications traceable to heat number, and a Certificate of Conformance. First Article Inspection available for production programmes.
TOP PROTO engineers understand dimensional requirements and quality documentation in aerospace, medical, automotive, robotics, electronics, energy, communications, semiconductor, and consumer products.
Tolerance Achievable on CNC
Quote Turnaround with DFM Review
Single Part Accepted — No Minimum Order
Manufacturing Processes, All In-House
Submit STEP, DXF, STL, or DWG files with your specifications. The quoting engine analyses geometry and returns instant pricing for standard parts. Complex parts go to engineering review.
TOP PROTO engineers confirm tolerances, material compatibility, and any design issues before quoting. You receive pricing, lead time, and specific DFM notes — within 24 hours for standard orders.
On approval, files move to scheduling, material allocation, and CNC programming. In-process dimensional checks run at defined intervals. You can track progress throughout.
Every feature is measured against your drawing before shipment approval. Parts arrive with a dimensional inspection report, material certifications, and Certificate of Conformance.
Top Proto’s direct manufacturing model eliminates broker markups and subcontractor delays. Parts are quoted, produced, inspected, and shipped by the same team in the same Shenzhen facility — which is why our lead times start from 24 hours for standard CNC parts and our pricing is competitive with the largest online machining platforms without sacrificing documented quality.
TOP PROTO operates CNC machining, 3D printing, sheet metal fabrication, vacuum casting, injection molding, wire EDM, and surface finishing — all from one facility in Shenzhen, China. That means one DFM review, one quality system, and one shipment regardless of which process your project requires. No subcontracting on standard orders. The full service range covers prototypes and low-volume parts from a single piece upward.
Xometry is a marketplace — it routes your order to one of thousands of shops. TOP PROTO is a direct manufacturer. Your part is quoted, planned, machined, and inspected by one team in one facility. That means consistent quality, clear accountability, and direct engineer-to-engineer communication when questions arise. Protolabs charges a premium for speed and targets the US and European market. TOP PROTO operates from Shenzhen — competitive pricing, same tolerances (±0.005 mm), the same documentation standard, with shipping to 100+ countries.
