Tonry mining safety support technology co.,ltd was founded in april 2007, with total investment of usd13.5 million. the company covers an area of 18 thousand square meters, locating at the foot of mountain tai, close to both qingdao (380km) and tianjin(410km) sea port with convenient transportation. We are a professional manufacturer of ground support products with rich experience and innovative solutions in ground control and roof support. Modern and international standard workshop with advanced production equipment. we have established a professional laboratory under instruction of rio tinto and sgs.