The building's buildings are rugged, easy to maintain, easy to clean, and have structural designs that protect food and packaging materials from contamination.

In order to prevent cross-contamination, personnel passages and material transport passages are respectively set up, and each passage is equipped with air curtains or two-way spring doors and electronic fly-killers and other insect-proof facilities.

The gaps around the pipes, doors and windows and air ducts to the outside are completely filled, and the window and vent fan ports are equipped with protective nets.

The height of the production plant should meet the needs of process, sanitation and equipment installation and maintenance.