High speed door Hongfa fast shutter doors by the Division we learn from foreign advanced technology and equipment , and to draw on the advantages of similar products in domestic self-developed high-tech products , with insulation , insects, wind , dust, noise, anti-odor, lighting and many other features , the high speed door can be widely used in food , chemical , textile , refrigeration , electronics , printing , assembly , precision machinery , logistics . warehousing and other places , the high speed rolling shutter door Can be extremely satisfying frequent high-performance logistics and clean place with a variety of needs and saving energy , increasing air-conditioning effect , fast closing , improve operational efficiency and create a better work environment