Shangtianxia is a B2B e-commerce platform under Antianxia, founded in Shijiazhuang in 2008 and operated by Shijiazhuang Antianxia Talent Service Co., Ltd. It connects manufacturers and buyers through product showcases, purchase requests and online transactions.

The platform focuses on two major categories: building materials and construction instruments. Merchants must pass enterprise qualification review. Product information is published by merchants themselves, who are responsible for its authenticity. The platform does not directly participate in transactions; please verify transaction details independently and complete them offline.