Techvalley was established in 1997 maintaining the oldest history in domestic X-Ray nondestructive testing device manufacturing industry. Also, Techvalley is the only company that runs X-Ray specialized research center attached to a company.
Chungwoo Co., Ltd. is the Manufacturer and General Distributor of Electro Medical/Beauty Instruments in Korea.
Chungwoo has been supplying the various range of medical / beauty equipment. It has also acquired the approvals CE, ISO9001 and ISO13485.
Osstem is one of the leading Dental Implant Group ranked the 7th world market and the 1st Korean market share in 2005 developing and marketing its original Implant System with R&D center and factory produces 3M various categories of implant sets annually