... 1).life-long self-absorption 2).ISO9001, ISO140001 WFB series of non-sealing self-control self-priming pump is to ... , carbon steel, titanium and other materials a series of machine, five different forms of a thousand kinds of specifications. In the electronics ... the total elimination of the "running, take, drop, leak, a substitute for a variety of long axis of liquid pumps, submersible pumps ...