Qingdao Huahai Environmental Protection Industry Co., Ltd., which was restructured from the former state-owned No.7 Qingdao rubber products factory, was founded in 1975. The company covers an area of 93000 square meters, and has assets of 200 million yuan. Huahai has more than 400 employees, of which senior technical personnel account for about 20%. It is a professional manufacturer of rubber dam and oil spill recovery equipment, and is recognized as a National High-tech Enterprise, establishing Shandong Provincial Enterprise Technology Center.