[特征]●防止损坏的法规，例如指定化学物质，第15条<指示，以打开和近距离的阀门等。> <阻止指示器等。 ●Refrigeration Safety Regulations, General High Pressure Gas Safety Regulations, Liquefied Petroleum Gas Safety Regulations, Ministry of Labor Ordinance [Specifications] ●Size (mm): 50 square x 1 ●K2 ●4mmφ hole x 1 ●Double-sided printing The color and size of the indicator board are not specified.
