... collector, high temperature,antifreeze,vacuum insulation. 2.Copper heat pipe,Start up quickly,transfers heat quickly, low start-up temperature ... 3.Food-grade stainless-steel SUS304 2B inner tank,full-automatic welding technology,under the protection of magnesium rod, ... has good double anti-corrosion function. 6.Gravity assisted heat pipe, unilateral heat transfer,high efficiency,low heat loss. 7. ...