Adjusted frame High heat efficiency High absorbing rate Packing size of water tankLength :190CMwidth :57CM height: 57CMpacking size of vacuum tubeLength :187CMWidth: 27CM Height :30CM Gross weight :86KgCapacity : 220L1.The evecuated tube is made of the borosilicate glass with the selective absorbing layer of the AL-N, which can be against the hailstone and has thehigh thermal efficiency. 2.The ...