https://patents.google.com/patent/CN202242998U/en
CN202242998U - Oil pumping device for tank truck - Google Patents
The utility model discloses an oil pumping device for a tank truck, which consists of an oil pump which is installed at the inner side of a chassis...
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https://hobbyant.com/p/sale-38475
250W 12V/24V/48V Submersible Water Pump Portable Stainless Steel Water Pumping Device Sale -...
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https://pubchem.ncbi.nlm.nih.gov/patent/US-2019345945-A1
Control circuitry and method applied to pumping device, pumping device and aquarium equipment -...
US-2019345945-A1 chemical patent summary.
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