Hangzhou AY Technology Co., Ltd., established in 2011, the head office at New Oriental International building, 567 Jiangling Road, Binjiang District, Hangzhou City, Zhejiang Province. Our manufactory located at No.3999 Changfeng Road, Linjiang Street, Qiantang District, Hangzhou City, Zhejiang Province. We dedicated to the research and development, production, and sales of effect pigments and additives.