When sourcing furniture hinges, you must prioritize material grade and durability. For high-moisture environments like kitchens or bathrooms, 304 or 316 stainless steel is essential to prevent corrosion. Pay close attention to the opening angle (ranging from 90° to 270°) and the cup diameter (standard is 35mm). Additionally, verify the cycle test rating; premium B2B suppliers on Made-in-China.com typically offer hinges tested for 50,000 to 100,000 open-close cycles to ensure long-term reliability.