G.Y. Hoph Strove Manufacture Co., Ltd(HOPH) was founded in 2014 with the intention to serve China market with high quality drilling tools, which we did for many years. Now HOPH is one of the leading producers of drill steel, like tapered rods,threaded rods, shank adapter and button bits. We provide drilling solutions to mining, quarrying and construction, and keep a large stock of standard products.