... Little pollution, environmentally friendly, safe and reliable; 5. Ceramic filter plate is long service life, easily replaced and doesn‘t ... 1% of that of traditional filters; 7. Automatic and continuous operation, low maintenance cost, high filtration efficiency; 8. Lower ... sulfide, nickel, zinc, lead, molybdenum, phosphorus, sulfur, quartz sand, and fluorite. A complete and up-to-date customers list ...