SPC GB/T 20897.4-2019
SPC GB/T 20897.4-2019 Inflatable boats -- Part 4: Boats with a hull length of between 8 m and 24 m with a motor power rating of 15 kW and greater (TEXT OF DOCUMENT IS IN CHINESE)
standard by Standards Press of China, 12/01/2019
standard by Standards Press of China, 12/01/2019