Tianjin enterprises need to bid for decoration. According to the provisions of "People's Republic of China (PRC) Government Procurement Law" and "People's Republic of China (PRC) Tendering and Bidding Law", public bidding is required for projects, goods or service contracts applicable to government procurement or public resource trading platforms when the amount exceeds a certain limit (the specific amount is determined by relevant laws and policies). Tianjin is a municipality directly under the Central Government of China, located in the northeast of China, adjacent to Bohai Sea and Yellow Sea. As an important port city in China, Tianjin has developed rapidly in the fields of economy, trade, finance, shipping and scientific and technological innovation.