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PTC multi-layer petrolatum coating anti-corrosion technology has been applied in many major domestic marine and industrial anti-corrosion projects, with typical successful cases covering many fields.: 1. Port and Terminal Engineering Qingdao Port Liquid Chemical Terminal: After applying this technology for nearly 15 years, the anti-corrosion status has always been maintained in good condition, effectively resisting the strong corrosive environment in the splash zone. Dandong Huaneng Power Plant Coal Terminal: This technology has been applied in the harsh environment of extreme cold in the Northeast and frequent sea ice impacts, and has been in stable service for 8 years with excellent protection effects. Many port facilities such as Zhanjiang Port Terminal and Fujian LNG Terminal have also completed anti-corrosion construction using this technology, and their long-term operation performance is stable. 2. Cross-sea Bridge Project The steel structure of the spray splash zone of the Hangzhou Bay Cross-sea Bridge adopts this technology as one of the core protection solutions to ensure the long-term safe service of key parts of the bridge. 3. Offshore oil platform engineering Shengli Oilfield CB22 single platform and Chengdao Oilfield-related offshore platforms use PTC technology for protection in the splash zone, which effectively solves the serious corrosion problem of platform steel pipe piles and significantly extends the service life of the platform. 4. Offshore wind power project The intertidal wind power foundation of Jiangsu Longyuan Offshore Wind Farm has applied this technology to overcome construction problems such as fastening large-size protective covers and repairing special-shaped structures, and has become a typical demonstration project in the field of domestic offshore wind power. 5. Marine Ranch Platform Project The marine ranch platform owned by Yantai CIMC Blue applies this technology to the splash zone corrosion problem of special-shaped steel structures, effectively reducing the risk of platform corrosion failure and ensuring the long-term safe operation of marine ranch equipment.