Porous Metal, Sintered Filter, Stainless Steel Filter manufacturer / supplier in China, offering Hengko Hg981 -30 to 120° C USB Handheld Mini Temperature & Humidity Meter, Hengko Hg982 -30 to 120o C USB Handheld Temperature and Humidity Recorder, Hg808-T High Temperature and Humidity 0-5 V Transmitter with -40~200o C Temperature Range for Nuclear Industry and so on.