Hangzhou Blue-sky Safety Glass Co.,Ltd. was built on March 22,2000 aproved by Government of Zhejiang Province according to paper No.Zhe Zi Fu Zi (2000)9348 and was registered as joint venture enterprise on March 27,2000 by industrial and Commercial Bureau of Hangzhou City according to joint ventrue paper No.Zhe Hang Zong Zi 003343.