... from common tanks insulation, besides polyurethane foam, the insulation of solar collector has aluminium silicate fiber layer which wraps the manifold ... individual tubes breakage can not influence normal working of while system.9. CE, ISO9001, CCC, EN12975,SRCC approved10. Lead time: 5 ... work in Europe work time. Instant hotline: 0086-13505738403 (SAN) solar energy, solar collector