Chang Shin International, established in 1993, for efficientanchoring, quarry, construction and water well drilling, CS PowerHammers & Bit are heavy duty tools with simple design providingyou Maximum performance at minimum maintenance. And various modelsare to be operated at efficiency for each individualapplication.For these reason, we are serving the drilling and constructionmarkets to more than 30 countries. As one of the leading companiesin Korea, we've dedicated to provide you with the better andstronger products you need. We are always ready to welcome you asour honorable customer, and would like to share the benefit withyou.