We maintain quality control throughout the entire production process, including raw material inspection, machining programs, tooling and fixtures, first article inspection, in-process inspection, and final inspection. For critical dimensions and high-precision components, coordinate measuring machines and other precision inspection equipment are used for verification. Complex parts may also combine turning, milling, grinding, wire EDM, and EDM processes to ensure accuracy and batch consistency.

CNC milling uses rotating cutting tools to remove material from a stationary workpiece and is suitable for machining flat surfaces, slots, holes, cavities, and complex 3D contours. CNC turning rotates the workpiece while a cutting tool removes material, making it ideal for shafts, sleeves, cylindrical parts, tapered surfaces, and other rotational components. For complex precision parts, multiple machining processes can be combined.

Yes. We provide CNC machining services for prototypes, product development, functional testing, engineering verification, and low-volume production. After receiving your 3D model or 2D drawing, our team evaluates the material, dimensions, tolerances, surface treatment, and quantity to determine a suitable machining solution and help accelerate the transition from design validation to production.

We can machine a wide range of metals and engineering materials according to part requirements, including tool steel, stainless steel, aluminum alloys, copper and copper alloys, as well as selected engineering plastics and high-performance materials. We also have experience with special engineering plastics such as PEEK, PEI, PPS, PPSU, and PFA. Specific material grades can be evaluated according to your drawings and application requirements.

For an accurate quotation, we recommend providing a 3D model together with a 2D engineering drawing showing dimensions, tolerances, and technical requirements. Please also specify the material grade, quantity, surface finish, critical tolerances, threads, heat treatment, and any special quality requirements. Common 3D file formats include STEP, STP, and IGES. More complete information allows us to evaluate machining methods, cost, and production requirements more accurately.

Oily marks on black resin or engineering plastic parts may be caused by residual cutting fluids, machining oils, rust preventives, mold release agents, or cleaning chemicals. Black surfaces tend to make gloss differences and residue more visible. In some materials, additives may also migrate to the surface. We select suitable machining fluids and cleaning methods based on the material and use cleaning, drying, and visual inspection to minimize such issues.

CNC machining removes material directly with cutting tools and generally provides higher dimensional accuracy and a more uniform surface finish. Minor tool marks may remain after machining, but the appearance can be further improved through grinding, polishing, sandblasting, or other surface treatments. 3D printing builds parts layer by layer, so visible layer lines and higher surface roughness may occur depending on the printing process, layer thickness, build orientation, and material. Post-processing such as sanding, polishing, blasting, or coating can improve the final appearance. For parts requiring tight tolerances, precise fits, and better surface quality, CNC machining is generally more suitable. For rapid validation of complex geometries and early-stage designs, 3D printing offers greater flexibility.