ongsheng Company was established in 1993, the headquarters is located in Shanghai in China. After 20 years of development, Longsheng company had become a large-scale modern industrial entities enterprise of integrating design & development, manufacturing and marketing, which professionally engaged in Pipe (PP-R water pipe, PE-RT collecting warm pipe etc.), household water fittings, switches & sockets, low-voltage electric , bathroom master, ventilation fan, Integrated ceiling etc.