Our History Orient Machinery is the global brand of HWH group. We were established in 1997, becomes one of the biggest manufacturers in air power, drilling and construction industry. We are the member of council of National Air Compressor Industry, the member of council of National Rock Drilling and Air Power Tool Industry, also one of the national standard maker. Our Factory Out company located in Quzhou city, Zhejiang province which is near to Shanghai and Hangzhou city. With over 1000 staff and 14 acres manufacturer base, we research and produce over 6 series equipment. Our Product Surface drill rig, diesel portable air compressor, electrical portable air compressor, stationary air compressor. Generally over 200 kinds of products. Product Application Mine, limestone, quarry, blasting, air power applications, construction industry. Our Certificate ISO9001:2008, ISO14001:2004, CE, Nation Famous Brands, Province Famous Brands, National High Tech Company.surface roughness drilling in stock website:http://www.orientmach.com/ website2:http://www.orientmach.net/