TOWER of PRAXAIR YIDIAN – SHANGHAI – CHINA by admin | Feb 23, 2022 | Pylons, Comms Towers, Transformers | 0 comments PRAXAIR YIDIAN is a large gas processing company in Shanghai. They experienced huge premature corrosion problems. The air separation cooling tower was coated with ZINGA as a primer in a duplex system in September 2001. Gallery Download PDF