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.
Qingdao Haina has been rated as an AAA credit enterprise
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Online purification empowerment enables Hainan Energy to significantly extend the lifecycle of gear oil
To address these challenges in gear oil application for oilfield pumping units, …
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Qingdao Hainai Composite Filter Element: High-performance Three-in-One Oil Purification Filter Element for Domestic Replacement
The composite filter element innovatively integrates three core purification fun…
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Qingdao Haina Energy Solves Industry Purification Challenges — Electrosorption Technology Empowers Aluminum Rolling Oil Purification
Aluminum rolling production is a continuous and high-intensity operation, in whi…
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Be inclusive, ride fast, and stand at the forefront
With thousands of sails setting forth, we are bound to succeed! In the new year,…