... solar system: 1.high hot water produced,use heat tube for exchange 2.CE,ISO9001,CCC, 3.reliable quality,offer OEM ... flat solar system(for a project) 2. Specification: 1×2 m², the water can ... . Operated automatically, stable performance, little maintenance, can stay for nearly 20 years.6. Diverse specification, fit for different kind of family.7. There ...