... different kinds of resistors basing on the user requirements,resistance is from 1Ωto 2000Ω,the flowing ... current ia allowed from Ω~2000Ω,and the flowing time is ... free from flammable gas, explosive gas,corrosive gas,and conductive dust. 9.As resistor is heating element,when ... from up and out from down,in from down and out from down,in from side and out from side, in from side and out from ...