The door frame is made of high-quality Steel Plate and rolled in a special production line. The inlaid sealing strip and the door are closely matched to close without impact sound. The door body is filled with fire-resistant aluminum silicate fiber, fire-resistant core material, and the door frame is inlaid with fire-resistant glue, which makes the products reach various fire-resistant grades and have the characteristics of fire-proof, heat-proof and sound-proof. The outer surface is formed by one-step pressing with a large-tonnage press and die, with a variety of pressing styles for selection.

Refractory grade:

Grade A, grade B, Grade C, Super grade A (more than 2 hours).