Shanghai Hai Hua Sensor Co., Ltd is a technology industrial company dealing with design、manufacture and sales. Hai Hua was established in 1994 and the cadre which covers 14000 m3 located in Ma Lu industry Zone of Jia Ding, Shanghai. The area of the current workshop is 4800 m3 while the second one which covers 7000 m3 is being constructed. There are also 100 employees in this company and 20% of the amount is technicians.