Resources

Discuss confidentiality and any NDA requirements before sending sensitive drawings. You can begin with a non-sensitive description of the component, quantities and manufacturing needs, then agree how protected information should be shared.…

State the required standard, supplier qualification, material evidence and product tests with the enquiry. These are different kinds of evidence and cannot be substituted for one another. Distinguish the evidence A material…

A custom-part project can involve selected production partners and several secondary operations. JUNCHU coordinates the drawing questions, process sequence, finished interfaces and agreed checks for the scope confirmed in the quotation. Confirm…

Yes. A sketch, photos, a reference-part description or a clear explanation of function can start the discussion. An initial enquiry helps identify what information is still needed; it is not a substitute…

Release production against an agreed specification rather than an informal collection of files. Confirm both the technical configuration and the scope of delivery before the order proceeds. Freeze the controlled information Record…

Specify appearance and fit together. A finish description such as “black anodized” or “powder coated” does not define texture, visible faces, allowable variation or the final mating dimensions. Define the cosmetic zones…

Agree tolerances around function and a practical inspection method. A general tolerance note is a starting point; it does not identify every interface that needs special control. Start from the locating features…

Yes. A prototype order can help resolve geometry, assembly and open specification questions before a production batch. Share the sample quantity and expected repeat volume so the starting form, tooling and approval…

A useful quotation starts with a controlled specification. Send enough information to distinguish a firm requirement from an item that still needs engineering review. Identify the part and revision Provide a part…