Leoyo Explosion-proof Electrical Co., Ltd which is specialized in producing factory used explosion-proof light fixtures, explosion-proof electrical apparatus and so on products belongs to the national non-region enterprise company. It is the fixed production enterprise of National Petroleum and Chemical Industry Bureau, China Chemical Industry Assembling Controlling Company, the First Class supply network of China petroleum natural gas group companies.the equipment resources market member enterprise of China petrified group, the recommend enterprise of China petrolenm chemical engineering construction, the executive unit of the explosion-proof branch party of China electrical apparatus industry association. The president of the company, Li Linsong is reelected consecutively two years sa the chairman of the association of Yueqing Explosion-proof Electrical Apparatus Industry and engaged as the committee member of Explosion-proof Electrical Aparatus Branch Party of the First National Explosion-proof Electric Equipment Standardize Technical Commission by National Technical Supervision Bureau.The company that occupied areas 3000 Square meter, the building areas 5000 Square meter, has owned 15 million registered capitals is located at the Export-oriented Economic Development Zone of Liushi, Yueqing, Wenzhou.In the period of the tenth Fie YearsáïPlant, the company will estiblish the new factory area in the industrial Central Park of Yanpan, Yueqing City which occupies areas 20000 Square meter and building area 18000.The company is provide with a strong engineering thchnical personnel and high quality staff.Which setsup Liubu yishiand the workshop of cast, meltworking, spraying plastic assembling, matches microcomputer management, drawing systim and possesses the relate checkout measures to form a coordinated process system of development researching and producing. The manufacturing of explosion-proof cast aluminum casing adop