Heat resistance insulation and assembly type thermal resistance structure, principle is essentially the same, the difference is that the insulation type product's connecting box (housing) in the design adopts an explosion-proof special structure, the connecting box is made of high strength aluminum alloy die cast, and has sufficient internal space, wall thickness and mechanical strength, the thermal stability of rubber sealing rings conforms to the national explosion-proof standards, so, when the explosive mixture gas inside the connecting box explodes, its internal pressure will not destroy the connecting box, and the resulting heat energy can't spread out, detonate. Ngam ye kä ye kek looi aye kek looi në kë de kä ye kek looi në kë de kä ye kek looi në kë de kä ye kek looi në kë de kä ye kek looi në kë de kä ye kek looiD₂BT4 wala dDDDDDDDDDDDDDDDDDDDDDDDDDDDDD₂BT4 wala dDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD