Xuzhou Purun Architectural Spatial Structure Co., Ltd. was a first-class enterprise qualification of steel structure in 1995. In July 2002, it passed the certification of CB/T1900l:2000 quality system standard. In November 2005, the company increased its capital and expanded its production scale. The registered capital increased to 16.3 million yuan, with an actual investment of 30 million yuan. There are 65 mu of newly purchased land, 20,000 square meters of newly built factory buildings, three new production lines and 48 new equipments. After the completion of the new plant, the company’s production capacity has been greatly improved.