Insulated Copper by Ruby Copper includes:

• ​Copper tubes conform to ASTM B280 (American standard) and JIS H3300 (Janpanese standard), minimize refrigerant leakage during installation and operation. 
• PE foam Insulation, standards suggested by Daikin, LG, Panasonic. Optimum condense prevention during air-conditioner operation, prolongs life cycle of air-conditioning systems.​