To ensure quality at a low price point, prioritize suppliers that provide detailed fabric specifications, such as GSM (grams per square meter) for thickness and composition (e.g., 95% Polyester, 5% Spandex). Request pre-production samples to check for stitching density (minimum 8-10 stitches per inch), hem finishing, and zipper functionality. Look for manufacturers on Made-in-China.com who hold ISO 9001 certifications or have undergone SGS/Intertek factory audits to verify their production consistency.