Precision CNC machining factories in Taiwan generally have bilingual capabilities. Sales contacts and process engineers primarily use Traditional Chinese as their internal language, while switching to English for external communication. Technical documents (drawings, process specifications, inspection reports) are typically provided in English, with Chinese versions used for internal reference. If buyers use Simplified Chinese or European languages, they should confirm in advance whether the factory has the corresponding translation capabilities to avoid misinterpretation of drawing annotations during processing.

For first-time collaboration, buyers should agree on shipping document items with the factory during the RFQ stage. Common items include shipping inspection reports, material certificates (Mill Certificate), dimensional inspection sheets, and packaging methods. The factory's inspection process typically follows incoming material inspection → in-process inspection → final inspection before shipment. Buyers can request on-site inspection during the process or arrange third-party inspection (SGS, TÜV, etc.), and should clearly specify the inspection timing and handling of non-conforming products in the contract.