Purchase Qty. Reference FOB Price
150-599 Pieces US$8.00
600-2,499 Pieces US$7.50
2,500+ Pieces US$7.20
Product Description
both open ends solar vacuum tube Solar vacuum tube is the core parts of solar water heating systems. It absorbs solar energy converting it into heat for hot water heating. Solar vacuum tubes have already been used more than 20 years in China. Each solar evacuated tube consists of two ...