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From November 18, 2020 to November 20, 2020, the second meeting of the sixth session of the National Marine Machinery Standardization Technical Committee (hereinafter referred to as "Marine Machinery Standardization Technical Committee") was held in Kunming, Yunnan. Mr. Miao Yu represented Rudong Hongxin Machinery Manufacturing Co., Ltd. (hereinafter referred to as "Rudong Horizon") participated in the meeting. Mr. Miao Yu was appointed as a new observer of the committee at this meeting and issued a letter of appointment. The meeting conducted training on GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"; First group: 1) GB/T "Ship and Offshore Technology Hull and Propeller Performance Change Measurement Part 1 General Rules" 2) GB/T "Ship and Offshore Technology Hull and Propeller Performance Change Measurement Part 2 Default Method" 3) GB/T "Ship and Offshore Technology Hull and Propeller Performance Change Measurement Part 3 Alternative Methods" Second Group: 1) GB/T "Ship and Offshore Technology Ship Transfer Winch" 2) CB/T "Full-Turn Rudder Propeller Device" 3) CB/T "Fixed pitch propeller lateral thruster device" Mr. Miao Yu participated in the review of the second group on behalf of Rudong Horizon.