Combinative shelving unit

A combinative shelving unit comprising:

• two stand assemblies, arranged parallel to each other, each comprising a pair of posts and a transverse link connected between the pair of posts, and each transverse link having a first assembling portion and a pair of second assembling portions,
• each first assembling portion is a first inverted-U section which is bent upward from each transverse link respectively, and the second assembling portions of each transverse link are a pair of second inverted-U sections which are bent upward from each transverse link respectively;
• at least one load tray comprising a front, a rear, a first side and a second side opposite the first side, a first protrusion protruding outwardly from the first side and a pair of spaced apart second protrusions protruding outwardly from the second side, the first protrusion being staggered and offset from the second protrusions, the first protrusion is configured to receive the first assembling portion of a first corresponding transverse link therein, and the second protrusions are configured to receive the second assembling portions of a second corresponding transverse link therein.