Biopharmaceutical industry is an important part of the national economy. The main engine of pure water equipment for biopharmaceutical industry is composed of high-pressure pump, membrane shell, imported reverse osmosis membrane module, on-line instrument and control electric equipment. Since the reform and opening up, China's pharmaceutical industry has maintained a relatively rapid growth rate, and China has become the world's largest producer of pharmaceutical preparations. The state has strengthened its support for biotechnology innovation and the development of biotechnology industry so as to maintain the rapid development momentum of China's biopharmaceutical industry. With the rapid growth of industrial output value, the R&D investment of large and medium-sized enterprises in biopharmaceutical industry in China has also increased rapidly.