... equipment to resist the typhoon3, All-copper with black chrome, highly selective absorber surface4, Ultrasonic welding technical, no defect with low temperature ... CottonThickness, Density45 mm, 35 kg/ m3Criterion6063T5 1.3 mmShellmaterialsAluminum AlloyBackplanematerials0.7mm Al-Zn plateSpoolInput/output3/4 ... for the solar water heating system.And we can provide you with good quality products at a ...