As a state-holding enterprise , Beijing Square Engineering &Technology Co.,Ltd was established in 1985, and affiliated to Beijing Automotive Industry Corp, which ranks among the world¡¯s top 500 enterprises (ranks 366th) . Now the company is specialized in kinds of irrigation dripline such as Drip Tape with Flat Dripper, Drip Pipe with Cylindrical Dripper, Drip Belt with Single wing labyrinth flow-path,filter and irrigation information system.