Luoyang Gongyan Technology co., Ltd(for short GY)stablished in 2008, is a specialized manufacturer and distributor of rock bolts other tunneling & mining products. Our company has the production capacity 20,000 sets per month. Our main products are Common hollow grouting bolt, ...
Telephone:86 - 379 - 63501959
Address:Taikang Road, Wangcheng Avenue, Luoyang city,Henan province, China Luoyang Henan 471023 China