... freezen& pressurized 3.certificat;CCC,CE,SK, SRCC,ISO 4,Delivery:15 days solar energy collector with heat pipe approved ... by ISO,CCC,CE ,SK,SRCCSOLAR COLLECTOR FEATURE:1. Pressurized solar collector with SK and SRCC certificate.2. Special high ... heater4. Exquisite workmanship to guarantee the decent appearance5. Certificate: solar key mark, CCC, CE, ISO,SK6. Can connected with the existing oil ...