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今年三月初,南京晨光机器厂8511所来沪介绍该所试制的801除氧封存剂的使用技术。该所近一年来已生产除氧
In early March of this year, Nanjing Chenguang Machinery Factory 8511 came to Shanghai to introduce the trial of the use of 801 oxygen scavenger storage technology. The past year has produced oxygen