Min. Order Reference FOB Price
3 Pieces US$100.00-600.00 / Piece
Product Description
1. Whole glass vacuum tubes adopt super hard borax and silica glass; 2. Absorb rate: ≥ 93%, thermal radiation rate: ≤ 6% 3. Temperature when exposed to sun without water: 250, 2.5hours to boiling if using single tube; 4. Resist 25mm hail, using life can last 20 years. OEM SERVICE ...