PTR Roots Blower 1.high accuracy,good performance,reliable operation 2.roots blower with long service life, easy maintenac PTR Roots BlowerPTR three-blade roots blower is widely used for pneumatic conveying system,in many kinds of industries such as porclain,building materials,paper making,smelting,power,petroleum,chemical ,textiles,aquaculture,sewage treatment,food,etc.But it doesn't apply to ...