CNC Machining in China

Standard production lead time is 4 to 8 weeks, with first-article timing confirmed at the quote stage. Rush programs can be reviewed case by case.

Standard machined tolerance is ±0.005 inch, and we hold down to ±0.0005 inch on critical features verified by CMM. Our engineering team confirms achievable tolerances against your drawing at the feasibility review.

We machine aluminum, steel, stainless steel, titanium, and engineering plastics, with broad alloy flexibility in China. If your part calls for a specific alloy or temper, our engineering team confirms the best fit at the feasibility review.

Yes. Section 301 duty rates vary by the part's lawful HTS classification, and we quote on landed cost with duties included, so China production remains cost-competitive for many part categories even after current tariffs. For tariff-sensitive programs, our engineering team can compare landed cost against our Mexico and India facilities at the quote stage.

There is no fixed unit minimum. Overseas machining often delivers its largest percentage savings at lower and prototype volumes, so you do not need high volume to benefit. The fit is about overall program value and ongoing potential rather than a single large run; we will tell you at the quote stage whether your part is a good fit and recommend the most cost-effective approach.

All production runs to ISO 9001 and IATF 16949 with in-process and CMM inspection. Every shipment includes a Certificate of Conformance and a dimensional inspection report, and third-party inspection is available on request.

We are the importer of record and manage customs clearance from China, then coordinate freight to your dock with tracking. Duties and freight are quoted up front, so there is no surprise on the invoice.

We offer anodizing in Type II and Type III, powder coating, plating in zinc, nickel, and chrome, passivation for stainless steel, heat treatment, and bead blasting. Standard machined surface finish runs down to Ra 0.4 micrometers, with finer finishes and other surface treatment on request.

Look at certifications such as ISO 9001 and IATF 16949, the inspection and CMM reporting included with each shipment, and whether one U.S. point of contact owns the program end to end. Redstone vets and manages the production facility for you and handles quality control at distance, so you are not coordinating an offshore quote desk yourself.

Yes. We run rapid prototyping and low-volume production on the same equipment that handles high volume production, so a part can move from a proven first article into sustained mass production without changing suppliers. Our engineering team confirms the right approach at the feasibility review.

CNC machining in China costs less primarily because of lower labor rates, established supply chains for raw materials like aluminum and steel, and large-scale manufacturing infrastructure. Redstone passes these savings to U.S. and Canadian customers while maintaining ISO 9001 and IATF 16949 certified processes and U.S.-based oversight, typically around 20% lower landed cost than equivalent domestic production, with the same inspection reports and material certifications you would expect from a domestic manufacturer.

Cost depends on material, part complexity, tolerances, surface finish, and order volume. Simple aluminum components with standard dimensions may start at a few dollars per unit in production quantities, while complex multi-axis titanium parts cost significantly more. Redstone quotes from your design files with programming and fixturing estimates, per-unit pricing at multiple volume tiers, and a full breakdown of finishing and shipping costs.