Quality control should not be a single inspection at the end. Build a multi-point QC plan: (1) raw material inspection before production starts, (2) first article inspection when the first unit comes off the line, (3) in-process inspection at 30% and 60% completion, (4) pre-shipment inspection when 80% is packed, (5) container loading supervision. Each step costs a fraction of catching defects at the destination.
Total landed cost is the only number that matters when comparing Chinese suppliers. It includes: factory price, inland freight to port, export customs fees, ocean/air freight, insurance, import duties, VAT, customs brokerage, and inland freight from destination port. A $10 product FOB can easily become $14-16 landed. Most first-time importers forget at least three cost components and end up with negative margins.
English communication ability often correlates with export maturity but is not a substitute for it. A factory with poor English but good systems and a reliable trading partner can outperform a factory with fluent English but weak processes. Judge suppliers on their systems and track record, not on their language skills. The best factories invest in quality control, not just sales teams.