Normally our MOQ is one 20 feet container, if you have a trial order, we can provide as you request. 

35-45 days after receiving the deposit.

We have an R&D department that can assist customers with product development, but you shall reach annual purchase amount.

Yes, we can offer sample for you to test.

Normally the payment item is 30% T/T in advance, 70% balance against copy of B/L, for further inquiry, please send to doyin@doyin.com

Yes, we can do 50hz/60hz, and the voltage can be customized according to the requirements of each national grid.

Yes, in order to get more information, you can email to doyin@doyin.com.

The serial numbers are laser printed in the middle of motor body.

Our submersible motors are not suitable for horizontal installation. 

No, the oil that is used is food grade dielectric oil, therefore it’s been specifically developed so that it will not contaminate the water inside the well;

No. If the pump is run dry then its moving parts will become extremely hot, causing severe damage to the pump over time and greatly limiting its service life. 

No. A submersible pump that runs without stop will burn out more quickly than a submersible pump that runs intermittently.

Yes. If a pump is freezing with water in it, cracking of the volute case as well as damage to the shaft and bearing set may occur. Thoroughly drain the water system of your pump and tank in freezing weather. If the pump has been frozen, inspect it for damage before returning it to service.