Butterfly rotor pump：
with butterfly rotor，it is superior to other rotor pump when transferring material with high viscosity and largerpowder and effectively transports extremely stiff material．
Single butterfly curved rotor pump(powder rotor pump)：
this pump series are specially design to transport material with larger powder．Its unique shape and curve makes it more outstanding compared to other pumps in delivering material withlarger powders．It effectively prevents powders from clashing，which is the top choice of pumps transferring material with powders．