... shelf racking system 2,adjusted by pitch 50mm freely 3,Specail sizes also avaiable 4,suit both box goods ... 1,The height of each layer can be adjusted by pitch 50mm freely2,Consist of ... , connector , steel shelf , wood shelf , soleplate and other accessory 3, Adopt the structure that the beam hitching on the frame ... 5, Easy to install and disassemble iso 9001 industrial storage rack