Our Company has gotten four certificates of Utility Model Patent
2007 / 11 / 01

ZL 2006 2 0004149.8    Gas-Liquid Dispersion Impeller

ZL 2006 2 0076205.9    A kind of Efficient Impeller

ZL 2006 2 0076765.4   Hollow Helix Impeller

ZL 2006 2 0076031.6    Agitating Equipment with Replaceable Seal for Liquid in Tank