タイトルまたは説明

Feature and Function: a. correct sitting posture. Prevent short-sight b. Prevent humpback c. learning comfortabe with it but not tired, improve study efficiency Structure: a. *2mm thickness metal materials, fireproof, wear resistant, hardness. Non-polluted, environmental protection, etc. b. The height can be adjusted against need, through the adjustable knob (notice: the angle of drawing desktop can be adjusted from ***5 degree)