Structural board and table

A table comprising a table board, the table board comprising:

• a surface board, and
• a bottom board, wherein:
• the bottom board is plastic,
• the surface board is planar,
• the bottom board comprises a first supporting surface and a second supporting surface,
• the surface board is directly fixedly connected on the second supporting surface,
• the bottom board comprises a plurality of protruding cavities spaced apart from one another,
• a three-dimensional shape of each of the plurality of protrudinq cavities is a frustum,
• an area of the second supportinq surface is ⅓ to ⅔ of an area of bottom openings of the plurality of protrudinq cavities,
• each of the plurality of protruding cavities comprises two ends,
• the first supporting surface and the second supporting surface respectively comprises the two ends of each of the plurality of protruding cavities along a protruding direction of the plurality of protruding cavities,
• each of a plurality of straight ribs is defined by two adjacent protruding cavities of the plurality of protruding cavities,
• the plurality of straight ribs are divided into at least two groups,
• the at least two groups of the plurality of straight ribs respectively extend in different extending directions and are respectively connected together to define straight linear lines having same widths,
• the straight linear lines are cross-connected to one another to form a polygonal mesh structure that defines the first supporting surface,
• each of the plurality of protruding cavities comprises connecting inclined walls respectively connecting corresponding straight ribs of the plurality of straight ribs and a top end of the two ends of a corresponding one of the plurality of protruding cavities in the second supporting surface, and
• the connecting inclined walls are connected to each other using inclined ribs such that, the inclined ribs are located at corners between adjacent connecting inclined walls in the plurality of protruding cavities and extend from intersections between adjacent straight ribs of the plurality of straight ribs in the polygonal mesh structure.