Lianyungang Lithis crop technology Co., LTD. (wholly owned by Hong Kong), founded in 1965, is a large and medium-sized modern enterprise designated by the state to produce pesticides. Its production base is located in Lianyungang Chemical Industrial Park (Duigougang Town, Guannan County), close to the coastal expressway (G15) and 204 National Highway, covering an area of more than 70 hectares (more than 1000 mu).Several synthetic production lines of pesticides have been built and put into production, and the company now has the capacity to produce tons of pesticides per year.In September 2000, the company passed the IS09001 international quality system certification, and the "Liben" trademark won the title of "Famous trademark of Jiangsu Province".

Handan Guanjiu Metal Material CO., Ltd is an independent manufacture and export enterprise. The main products are : aluminum bar,zinc ingot, lead ingot, copper wire scrap, cobalt metal, nickel metal and so on. The products are applied mainly in automobile, high-speed rail, electrical aerospace, shipping, military industry etc.