TOPDRILL established in 1999, makes a constant offort to find out the best ways to harmonious our activites in development, production and sales, in order to achieve greater efficiency, greater flexlbility and greater customer focus. In spite of numerous brands dominating the market, TOP DRILL is constinuously growing and has secured the leading position. As a professional manufacturer ot DTH Hammer and Bit, we have been operated in more than 40 contries around the world.