Yongdexin was founded in 1980. It is a group-based enterprise with the production of plumbing valve pipe products as the core. Through transformation and upgrading, the enterprise has become an operator of passive energy-saving buildings that introduces German technology in China. Its subsidiary companies include: Yongdexin Monk Door and Windows Technology Co., Ltd., Yongdexin Yiju Technology Co., Ltd., Yongdexin Passive Architecture Design Co., Ltd., Yongdexin Copper Co., Ltd., Yongdexin Green Construction Technology Co., Ltd. and other subsidiaries.

Yongdexin's brilliant achievements and honors: participated in the Olympic venues--National Stadium (Bird's Nest) Luban Award Project, National Swimming Stadium (Water Cube), World Expo Madrid Pavilion, Guangzhou Asian Games City, Xiaoshan International Airport Terminal, Shenyang Technology Engineering construction of the university teaching building, Xi'an New Era Square, and China National Defense Working Committee building. It is a national and industry standard drafting unit such as GB18145-2014 "Ceramic Fold Sealed Water Mouth", JB/T11492-2013 "Copper Ball Valves and Gloss Valves for Gas Pipelines" and other national and industry standards; it has obtained ISO9001, ISO14001 and OHSAS18001 management system certification.

Yongdexin has obtained the off-site copying rights of German passive houses at the "Hamburg House" of Shanghai World Expo and the ecological energy-saving technology of passive houses. This technology has been widely used in passive house construction projects such as OCT and Xishang Huangting. Yongdexin will build a passive housing industry value chain integrating design and research and development, installation and operation, project management, production and manufacturing, online sales and offline services, and become a passive building system integrated operator in China.