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Rotor of claw type dry vacuum pump - invention patent
Rotor of claw type dry vacuum pump - invention patent
A kind of double motor compound rotor double shaft transmission equipment patent
A kind of double motor compound rotor double shaft transmission equipment patent
Claw type dry vacuum pump compound sealing device - Patent
Claw type dry vacuum pump compound sealing device - Patent
A rapid prototyping die for screw rotor -- utility patent
A rapid prototyping die for screw rotor -- utility patent
A vertical dry pump top bearing self lubrication system -- patent
A vertical dry pump top bearing self lubrication system -- patent
Screw anti claw vacuum pump - Patent
Screw anti claw vacuum pump - Patent
A compound rotor vacuum pump patent
A compound rotor vacuum pump patent
Vertical dry pump with self circulation lubrication system
Vertical dry pump with self circulation lubrication system
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