Build a shortlist of three to five suppliers per product. Verify company registration, factory ownership and export history, and request references from customers in your region.
Write a clear technical specification with applicable standards, materials, tolerances, marking, packaging and documentation. Ambiguity at this stage becomes disputes later.
Approve a sample or first article against the specification before mass production. For project work, ask for the factory test plan and agree on hold points.
Use an independent inspection company for pre-shipment checks covering quantity, workmanship, markings, testing and packing. For critical equipment, witness performance or pressure tests.
Agree on spare-parts supply, technical documentation in your language and a contact for warranty claims before the order is placed.