Food production workshop industrial lighting in addition to the purification plant to meet adequate lighting, also called tubes and bulbs including IED, protection and control. Full details are listed below the industrial lighting regulate food production plant CAC "Food Hygiene Law": 4.4.7 Lighting should provide plenty of natural or artificial light to ensure that work under hygienic manner. Lighting light color should not be misleading. The intensity of light should be the nature of food processing to adapt. Lighting fixtures should be properly protected to prevent damage caused by pollution of the food. GB14881-94 food enterprises hygiene norms 4.5.9 General lighting, lighting 4.5.9.1 shop or work place should have plenty of natural light or artificial lighting, shop lighting coefficient of not less than grade Ⅳ, mixing test place Face illumination of not less than 540Lux, production plant more than food additives should 220Lx purification plant, processing establishments Face of not less than 220Lx, other places not less than 110Lx. 4.5.9.2 lighting line party shall be fitted with protective cover assembly clean room air handling units installed bakery purification plant, shall meet the following requirements: 1, type, size, orientation, functional and technical specifications should be consistent with section engineering design; 2, measures should be taken to seal between the various functional segments of the air conditioning system of the air handling units. Air conditioning unit and attached envelope seams must be sealed; 3, on-site assembly of modular air handling units should be carried out to detect air leakage, air cleaner grade of 1 to 5 of the leakage rate shall not exceed 0.6%, from 6 to 9 Detection food shall not exceed 1.0% sterile purification plant, air leakage rate should be consistent with current national standard "modular air conditioning units" requirement GB / T1429; and 4, the surface should be flat in the air-conditioning unit, clean, without oil, debris, dust; 5, check the door frames should be flat, the gasket should be consistent with this specification; 6, the isolator according to requirements of engineering design specifications, model, location, installation, leveling.