1.BPQ series flat supersonic jet mill for industrial 2.asy access to the 1-10 micron ... 1.Operating principle BPQ series flat supersonic jet mill for industrial. The pressure gas by feeding the ejector nozzle to ... pharmaceuticals, traditional Chinese medicine, pesticide, chemical, metallurgical and other industrial materials ultrafine grinding, such as carbendazim, thiophanate-methyl, herbicide, ...