Energy-saving bonded glass (LOT-N series) plus multi-layer (hollow) method to enhance the effect of heat insulation. The aluminum frame is placed in two single-layer glass and the joint is completely sealed by the rubber strip, and then the inert gas argon gas is poured into the hollow layer, which has good light transmittance and can block 99% of heat radiation and 99%. UV, SC shielding coefficient = 0.350, SHGC = 0.304, because it does not contain metal, has a low internal reflection; and the principle of thermal convection generated by the air layer in the middle, can effectively solve the heat conduction problem of general glass, if it is targeted It is the best choice for customers with high insulation requirements.