usually consist of upright ,beam, shelves, deck, staircase handrail etc. Heavy(medium) duty racking forms the main 
parts of mezzanine, and cold rolling walkways connect all shelving( deck) to build a whole structure of the mezzanine .
special locks are adopted to fix walkway and beams tightly. The walkway has such advantage as good loading capacity, 
high precision, quite smooth walkway surface . and it’s easy to be fixed. The mezzanine is equipped with lighting systems, 
easy to access and manage goods. Loading of shelving (decking)in mezzanine is normally less than 500kg per layer, 
level height of mezzanine is about 2200mm to 2700mm. The mezzanine floor may be two or three levels. Goods are to be 
conveyed to the second or third floor by forklift , lifts or staircase and then moved to the pointed position by cart