Suzhou Hongding Purification Technology Co., Ltd. was established in 1999. It has been deeply involved in the field of clean technology for more than 20 years. It has built a complete industrial matrix with Suzhou headquarters as the strategic center and its subsidiary ZONGHAI Purification (Suzhou) Co., Ltd. as the core production carrier. It has linked the industrial matrix of the three major manufacturing bases of Dezhou, Shandong, Huzhou, Zhejiang, and Chengdu, Sichuan, and formed a four-pole collaborative clean system full-industry chain service system covering the whole country.