详细介绍：
VT4.25贝克叶片

(贝克无油旋片式真空泵现货VT4.4/VT4.8/VT4.10/VT4.16/VT4.40/VT4.25/KVT3.60/KVT3.80/KVT3.100/KVT3.140/VTLF250 )
 U3.6/U4.20/U4.40/U4.70F/K/U4.70F/K/U4.100SA/K/U4.100F/K/U4.165SA/K/U4.165F/K/U4.190SA/K/U4.190F/K/U4.250SA/K/U4.250F/K