Shandong Smile International Trading Co.,Ltd (Pingyi Zhongxingsheng Building Materials Co.,Ltd) founded in 2003. The company has an area of 120,000 square meters, a total investment of RMB 70 million, and more than 930 employees, including 230 specialized technical personnel.

The company is a large-scaled building materials company manufacturing and trading  phenolic foam insulation board, phenolic foam air tube.

The company has four phenolic insulation board production lines with an annual output of 3000000 square metres. It mainly produces phenolic insulation board of "Smile" brand, characterized by no toxicity, radiation, or pollution, becoming the best materials for fire-proofing and thermal insulation project.

It seeks efficiency in the aspect of management, seeks innovation in terms of technology, and breakthrough in performance.