... for import stainless steel while being hign-quality(304,316L),Its characteristic is small,light,easy to use,filters the area it ... ,pollution-free,hot stability of the speed and chemical stability is good.Filter can stain except that most particle,apply precise ... stain and except that fungus craft to extensively. 1.staining tube has a core,2core,5core,7core,9core,11core ...