In November 2024, Qingdao Haina Energy Environmental Protection Technology Development Co., Ltd. was rated as an AAA credit enterprise by Beijing Crown Speed Credit Management, with a validity period of 3 years.

In November 2024, Qingdao Haina Energy Environmental Protection Technology Development Co., Ltd. was rated as an AAA credit enterprise by Beijing Crown Speed Credit Management, with a validity period of 3 years.
The secondary benefits brought by electro adsorption technology are positive, re…
Purification and filtration of steel hydraulic oil and gear oil,Electroadsorptio…
Deeply adsorb organic acids and alkaline nitrogen.
KV40介于32~460cStMineral based lubricating oil.