[特征]●预防特定化学物质 的法规，第15条<符合阀门开放和关闭方向的指示等。 ●Refrigeration Safety Regulations, General High Pressure Gas Safety Regulations, Liquefied Petroleum Gas Safety Regulations, Ministry of Labor Ordinance [Specifications] ●Size (mm): 80 rounds x 1 ●K2 ●5mmφ hole x 1 ●Double-sided printing The color and size of the indicator board are not specified.
