The power plant specific bag is a dust removal bag product with a large production volume in the company, focusing on solving the working conditions that require high temperature and acid and alkali resistance in the flue gas of coal-fired boilers and straw boilers in power plants. PPS needle punched felt bag is good at solving this working condition problem, because it is called a special bag for power plants. PPS needle punched felt material is made of polyphenylene sulfide (PPS) fiber from Toray and Torobo companies in Japan, and is manufactured using imported stretching and shaping equipment. It is an excellent high-temperature resistant filtering material. The service life varies from 2-4 years depending on the working conditions.