Solar collector 1. SRCC,SOLAR KEYMARK,CE,ISO,CCC 2. 15years use life 3. High ... SRCC,Solarkeymark,EN12975-1/2:2006,CE,ISO9001:2008; Solar heat pipe series solar collector are always connected with existing heating supply device ... coating on the inner Cover of the evacuated tubes converts solar energy into heat energy and transfers heat to the heat ...