Tonghua Hongguang petroleum machinery machinery limited liability company engaged in oil drilling and workover tools for nearly thirty years of production history, through continuous efforts to develop has been awarded more than ten patented product certificate and the State Administration of quality supervision tongs, one country\'s industrial production permit, and passed the ISO9000 quality system certification in 1998 through 2007 API petroleum institute.
Website:www.jlthhg.com.cn