Shanghai Gangkai Purifying Products Company, Ltd, one of Professional mask manufacture was founded in the year 1992 and locates in Shanghai city. It is covers an area of 20,000 square meters. Since its inception, Shanghai Gangkai has adhered to innovation and quality. Two products (N95 masks: GIKO 1400 surgical N95 mask and GIKO 1200H N95 mask) have passed the strict NIOSH certification. Besides GIKO, Gangkai has registered other 4 brands. They are: Elcomsoft, Gangkai, MG, and MASCO.