The United States is the world's top producer of filters and the world’s largest manufacturer of filter bags. The successful acquisition of STRAINRITE, the OEF and ATF filter manufacturers, has become a global company. The company's filtration products have reached the scale of production lines.

Among them, the standard loop filter bag is the world's most widely used and most cost-effective filter bag, with strong stitching, durability and reliability. HPM high-efficiency series filter bags, with membrane protection, can effectively remove pathogenic micro-organisms and pathogens in surface water, up to 99% working efficiency, filtration accuracy to 1um, as membrane protection pre-filter can greatly reduce the cost of the membrane.