On August 28, Tianjian Company received the serial number issued by the State Administration of Market Supervision and Administration: TS2210H66-2021, which is valid until October 20, 2021, and is approved to manufacture A2 grade pressure vessels. The manufacture of the third type of pressure vessel marks the successful completion of the re-examination and renewal of the pressure vessel certificate of Tianjian Company every four years.

(Contributed by Tian Pingqiang Chen Pingqiang, edited by Wang Tao)