... 4. Quality standard complied: GB/17791-1999, JISH3300,ASTMBB743;5. The copper pipe compatible any gas:R22,R407C,R410A,R134A,and so ... on;6. PE insulation pipe: thickness from 7mm to 20mm, with a good heat resistance, lower water ... protection layer14. ROHS certification.15. Air conditioner Installation Kit(water pipe,tape, plasticine)16. Note:Different size can be offered ...