Wontech is a high-tech private enterprise integrating designing, manufacturing and trading in Changsha, Hunan province. We specialize in manufacturing "WONTECH" brand down-the-hole(DTH) hammers and bits, covering DTH hammer and bits, overburden casing system, reverse circulation system, and top hammer drilling tools. Wontech has an excellent R&D team who dedicatedly focuses on research, development, and designing drilling tools. We have accumulated rich experience in this industry and gained leading advantage in our brand, talents and technology. We promise to provide complete DTH drilling solutions to our customers with high-quality products, outstanding credit and best services.