... safety andreliability ofourproducts.2.ISO9001:2000 tested quality control system,guaranteeingthat all raw materials, from the stainless steel ... internationally-familiar brand,and areprocessed by the numerical controlling system, all the finishedproductsare put to test and trialoperation, ... products in 2007 byGuangdongEnvironmental Protection Industry Association. Highly-efficient Cartridge Dust Catcher