Where can I check the authenticity of goose down jacket in Hangzhou?

Hangzhou binjiang market supervision bureau. The authenticity of goods in Hangzhou can be monitored and tested in Binjiang market, so the authenticity of goose down jackets can also be tested there. Hangzhou, referred to as "Hangzhou" for short, is the capital of Zhejiang Province, a sub-provincial city and the core city of Hangzhou metropolitan area. It is the capital of Zhejiang Province, the economic, cultural, scientific and educational center of the whole province, and one of the central cities in the Yangtze River Delta.