Material Description:

　　Stand foot: It is made of aluminum alloy die-casting, the armrest is sprayed, and the overall thickness is 50mm.

　　Backboard: stamped and formed with 1.5 thick steel mesh, and the surface is treated with anti-oxidation treatment and high temperature spray

　　Seat seat: Use high-quality multi-layer board rotary cut veneer by mold hot press forming and face pressing fire board. The seat plate and the corner code are connected by a penetration method, and the plate surface is equipped with a special stainless steel screw sleeve.

　　Writing board: It is made of MDF surface with fireproof board, round edging process, the thickness is 25mm, the depth is 300mm, and it is refined by PVC edge sealing on the left and right sides

　　Booknet: Using φ5 * φ3mm high-quality cold-drawn steel wire, the surface is treated with electrostatic spraying.

　　Reply mechanism: gravity reply, never fail

　　Earth explosion screw: stainless steel hexagon socket head screw and color zinc-plated expansion nut.