PGF型 定量泵 型号 NG物料号"R"右旋物料号"L"左旋 PGF1-2X/1,7.AO1VP1 R900932132 R900932183 PGF1-2X/2,2.AO1VP1 R900932133 R900050982 PGF1-2X/2,8.AO1VP1 R900932134