http://www.antaipump.com/ ★ main purposes: for coal mine methane (commonly known as gas) and coal dust explosion hazards in the workplace, liquids containing sand, coal, coal gangue, coal cinder, fibers, and other insoluble solid mixed with sewage material. Also apply to the construction of buildings, hospitals, residential areas, municipal engineering, traffic and construction, sewage plants, sewage treatment and other occasions of small carriage containing solid particles, long fiber wastewater, rainwater and sewage.