Yongjin is specialized in marine engine part development and production with 3 decades of business and technologies. From modeling, casting, processing to assembly, based on technologies established from experience of wood pattern production for marine engine parts since 1986, Yongjin has integrated production processing line, which is rare not only in the country but also in the world. The innovative system and technologies are applied to producing cylinder heads, important part of engine for marine engine makers such as MDT Engine, HIMSEN Engine, Nigada Engine, etc. and the products are supplied to Hyundai Heavy Industries, STX Engine, Doosan Engine, etc. and the finished products by the prime contract companies are supplied worldwide. .