Product Description: the gate stack door developed and produced by Wanda company has many functions, such as heat preservation, cold insulation, insect proof, wind proof, sound insulation, fire prevention, odor proof, lighting and so on. It is widely used in food, chemistry, textile, refrigeration, electronics, printing, supermarket freezing assembly, precision machinery, logistics storage and other places, Large area openings, high wind resistance requirements, inside and outside doors. It can meet the requirements of high-performance logistics and clean places, save energy, improve the air conditioning effect, high-speed automatic closing, and improve the efficiency