G.Y HOPH STROVE TOOLS MANUFACTURE CO.,LTD (HOPH) mainly produces rock-drilling tools for mining、construction、tunneling、quarrying and related industrials. HOPH has its own factory and laboratory and quality monitoring for high-end rock-drilling tools. In order to strive to provide clients with more economical, more sturdy, more efficient solutions, relying on the "national and local joint Engineering Laboratory of high performance metal structural materials and manufacturing technology" of Guizhou University and the "Guizhou Provincial Key Laboratory of material structure and strength", an enterprise innovative technology R & D team and an achievement transformation, promotion and application platform are established to continuously develop key manufacturing technologies for fatigue resistance. The core team of the company is composed of core material experts of Guizhou Province and industrial production technology experts. HOPH inherits the decades' accumulation and technical essence of Guizhou rock drilling tools industry. Through continuous technological progress, HOPH ensures that the product quality is consistent and in the leading position in the industry.