OEFAS system doors and Windows, belonging to the high-end system doors and Windows brand of Foshan Hill Dun Home Technology Co., LTD., was founded in 2015 in the city of aluminum alloy doors and Windows -- Foshan, China, the production base covers an area of ​​15,000 square meters, with strong productivity and R&D team, With new doors and Windows aesthetics as the direction, the whole welding spray doors and Windows as the ядро, базирана на съвременното производство на монтажна линия.