Upload the package
Send CAD, drawings, material, quantity, finish, and the inspection points that matter.
China CNC machining services for prototypes and custom parts.
Upload CAD and drawings for a structured machining quote, manufacturability review, inspection scope, and export delivery assumptions before production begins.
- Machined metals, plastics, and tooling
- Private drawing upload
- Assumptions documented before production
Machining concept visualFrom drawing intent to precision geometry
Manufacturing scope
Route each part to the process it actually needs.
Each request starts with the drawing package rather than a generic price table. Geometry, material, tolerance, finish, quantity, and inspection are reviewed before the process is proposed.
01Core capabilityPrecision CNC Machining Services
Milled and turned components reviewed against material, tolerance, finish, and inspection requirements.View capability
023-axis and multi-axisCNC Milling Services
Multi-face milling for aluminum, stainless steel, copper alloys, engineering plastics, and tooling components.View capability
03Precision turningCNC Turning Services
Rotational parts, bushings, shafts, sleeves, and combined turned-milled geometries.View capability
04Tooling detailWire EDM Services
Fine profiles, narrow slots, hardened tooling details, and geometry that is difficult to mill conventionally.View capability
05Mold and diePrecision Mold Components
Cores, inserts, sliders, and related tooling components produced to drawing-controlled requirements.View capability
06Industrial equipmentCustom Automation Parts
Custom brackets, fixtures, machine components, and replacement parts for production equipment.View capabilityFactory floor evidence
See the workshop behind the RFQ process.
Source-screened photographs show the machining environment, cutting activity, and operators without turning visible context into unsupported capability claims.
Industry-focused CNC sourcing
Machining requirements change with the application.
Start with the operating context, then define the drawing, material, tolerance, finish, inspection, and records that belong in the RFQ.
01Aerospace & Defense CNC Machining
RFQ review for complex, lightweight, and traceability-sensitive machined components.
Review sourcing priorities
02Medical & Laboratory CNC Machining
Machining review for instrument, diagnostic, fluid-path, and laboratory equipment components.
Review sourcing priorities03Automotive & EV CNC Machining
Prototype, bridge, fixture, and repeat-part sourcing for vehicle and EV programs.
Review sourcing priorities
04Robotics & Automation CNC Machining
Precision parts for motion systems, fixtures, end effectors, and production automation.
Review sourcing prioritiesQuote discipline
A clearer handoff from CAD to production.
Open items are identified before order release. The quote states what is included, what still needs confirmation, and which inspection outputs are expected.
Engineering review
The RFQ is checked for process fit, missing tolerances, special characteristics, and inspection scope.
Quote with assumptions
Pricing is returned with the selected process, lead-time basis, exclusions, and open questions.
Produce and inspect
Approved requirements become the working reference for production and inspection records.
Why ProtoRFQ
A manufacturing handoff built around the drawing.
The quote is not treated as a single price number. Process fit, open requirements, inspection scope, and delivery assumptions stay visible before production starts.
Drawing-first review
CAD and drawings are reviewed before the manufacturing route is proposed.
Visible assumptions
Materials, tolerances, finishes, quantities, and exclusions are stated in the quote.
Defined inspection
Critical dimensions and required inspection outputs are agreed before release.
Export-ready handoff
Packaging, documentation, and delivery requirements are confirmed with the order scope.
Ready for review
Send the drawing package. Keep the assumptions visible.
Upload CAD, PDF drawings, quantity, material, finish, and the dimensions that must be inspected.
Build an RFQ package
Published standards
The standards this language comes from
A drawing arrives under the ISO or the ASME convention depending on where it was drawn. ProtoRFQ claims no approval under any of these; the standard that governs a project is the one named in the RFQ.
- ISO 2768-1:1989 — general tolerances for linear and angular dimensions without individual indications, in four tolerance classes.
- ASME Y14.5-2018 — the GD&T standard defining the symbols, datum references and profile tolerances an inspection plan is built from.
- ISO 21920-2:2021 — surface texture parameters; a finish requirement is only checkable once it is written in one of them.