Henan Zhengzhou Songshan Enterprise Group Co., Ltd. is a province key company of new and high technology. It consists of five subsidiaries and one research institute, with the largest production base for high-temperature electric heating elements and the most advanced production line of butyl rubber pharma-stoppers in China. The company carries one state key new production project and two province key high-tech industry projects. The main products include molybdenum disilicide heating elements (...