1. The rise-tube is self-melt welded to the strip: Better heat conductiong and do not peel off.

2. The double semi-round sun-strip sustaining each other: Short the heat flow in the strips and high the conducted efficiency because stuck to the glass-tube wall tightly. 

3. It can be matched with the vacuum tube in diameter of 47 or 58 and with all length.

4. Used for:U-tube domestic water heater, double-circle fission water heaters and heat-water systems under pressure, etc.

     There are also the Absorber plate of U-tube with fin in which the fluid not less or more in the tubes and can take the heat more quickly.

  5. Left picture: welded with collector tube with flat fin. Below picture: Single tube with round fin.

★ The heated temperature can up to above 100℃.

★ Can be made into U-tube Collector model.

★ Suit to the double-circle system.