How to Verify Production Lead Times: Realistic vs Overpromised

Google Maps Street View is a powerful but underused verification tool. Search the factory address and check: does the location match the description? Is the building size consistent with claimed production capacity? Does Street View show the factory sign in the photos? I've caught suppliers claiming factory status when Street View showed a residential apartment building. This one check takes 2 minutes and costs nothing.

Your gut feeling after multiple interactions with a supplier is a valid data point. If communication is consistently slow, answers are evasive, or promises are repeatedly broken during the sales process, those patterns will worsen during production. A supplier's sales behavior is the most accurate predictor of their operational behavior. If something feels off during quotation and negotiation, trust that instinct and dig deeper before committing.

Sample quality is not always indicative of production quality. Some factories produce 'golden samples' — handcrafted by senior technicians — while mass production runs on standard lines. To verify, ask for samples taken from regular production, not specially prepared ones. Better yet, visit during production and randomly select samples from the line. The gap between sample and bulk quality is one of the most common complaints in China sourcing.