2. Chongqing Water Pump Factory: Chongqing Water Pump Factory is an earlier enterprise engaged in the production of metering pumps. The drawings are from Hefei General Machinery Research Institute, because the original drawings were designed and produced separately. Now the metering pumps in Chongqing are still from Hefei General Machinery Research Institute in terms of shape and technology. However, the products of Hefei General Machinery Research Institute are modified and designed, which are different from those of Chongqing Water Pump Factory.
3. Benxi: There are many manufacturers of metering pumps in Benxi, but their technology also originated in Hefei. Later, the larger Benxi water pump factory closed down (it seems to be this factory), and Hefei seems to have invested in integration, but it was fruitless. The metering pumps of other manufacturers in Benxi are mainly piston pumps, and the diaphragm pump technology is not very good.
4. Dalian Liwa: German Liwa and Dalian Dana are joint ventures, mainly based on Liwa metering pump technology, with advanced technology and correspondingly advanced price, hehe. .....
I won't introduce the others one by one, and so do foreign agents. At present, domestic metering pumps are widely used by foreign brands such as Pass Fei Da, Milton Rowe and Liwa.