**Environmental Progress of Steel Drum Sealers** **Yang Wenliang** Recently, Chai Jing’s documentary "Under the Dome" has significantly raised public awareness about environmental protection in China. It’s time for us to take real action—starting with ourselves and right now. Small steps can make a big difference. In the production of steel drums, the electroplating and painting processes are major contributors to water and air pollution. Therefore, the steel drum industry still has a long journey ahead in terms of environmental protection. Electroplating of steel drum sealers has long been a significant source of pollution. To address this issue, we have studied advanced foreign technologies and implemented modern solutions. Among them, Nanjing Ningrong Steel Barrel Sealer Factory is leading the way in adopting eco-friendly practices. According to global environmental regulations, hexavalent chromium plating will be phased out worldwide in the near future. To meet these standards, Nanjing Ningrong has developed a new trivalent chromium passivation process. This innovation not only protects the environment but also ensures a safer working environment for employees. Currently, Nanjing Ningrong is the first company in China to implement trivalent chromium plating in the packaging industry. This process reduces environmental harm caused by hexavalent chromium while maintaining or even improving product performance. We believe that Nanjing Ningrong’s trivalent chromium-passivated steel drum sealers will bring meaningful progress to environmental protection in China’s packaging sector. Every time smog covers the city, people feel helpless and anxious. But if we can contribute to reducing pollution, it would be a great achievement. As shown in the images below, the left sealer is treated with hexavalent chromium, while the right one uses trivalent chromium.   The chrome passivation layer is the outermost protective layer on the galvanized sealer, playing a crucial role in rust resistance and adhesion. Using trivalent chromium passivation not only minimizes environmental impact but also enhances product performance. Key benefits include: - Superior rust resistance - Proven performance by industry leaders - Fully compliant with environmental regulations - A safer and healthier workplace Now, all domestic steel drum sealer manufacturers are gradually adopting trivalent chromium passivation as the standard process. With technical support from industry experts and regular mold inspections, Nanjing Ningrong’s products not only protect users’ goods and the environment but also deliver higher quality performance. The chrome passivation layer offers maximum protection for steel drum sealers. As environmental laws continue to evolve, hexavalent chromium plating will soon be obsolete. To replace it, Nanjing Ningrong has introduced a new trivalent chromium passivation method, changing the color of the galvanized sealer from gold to platinum. This change not only helps protect the environment but also provides better rust resistance. Nanjing Ningrong’s commitment to environmental protection is truly commendable. We look forward to the day when trivalent chromium sealers become the standard in the domestic steel drum industry.

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