solar project Detailed Product Description Features: 1) Strong adaptability 2) Wide application occasions 3) High degree of automation 4) Economical and practical 5) Environmental conservation and energy 6) In large-scale projects,auxiliary heating system, computerized controller and pipe cycling system 7) According to the required configuration, it can be divided into two types. one is vertical and the other is horizontal 8) With large heat collecting capacity and hot water output Specifications: 1) Water tank (interior): SUS304-2B food grade stainless stee 2) Water tank (exterior): PVDF 3) Glass tube dimensions: 58mm x 1.8m / 47mm x 1.5m 4) Heat preservation: 72-80h 5) Hail resistance: 25mmPacking:1pc/ctnFastening pieces was made of stainless steel screw.