... .Quality Control 3.Punctual Delivery Mesh Office Chairs PP-805Mesh Office Chairs:1)Nylon base and nylon castor,base can support 900KG2)PP armrest,tilt mechanism3)high ... produce revelant products: manager chair,boss chairs,directorchairs,mesh chair,staffchair ,conference chair ,executive chair,meeting chair,clerk chairs,PU chairs office chairs and student charis.