Material Description:

　　Standing foot: The riser is made of high-quality elliptical steel tube 35 * 80 * 1.5mm, and the foot plate is made of 2.0mm cold-rolled steel plate by die stamping and welding;

　　Seat and back plate: Multi-layer plywood is hot-pressed and spin-cut, with fireproof board on the outside, environmental protection paint edge banding around, moisture-proof and durable; thickness 12mm;

　　Writing desk: It is made of MDF surface with fireproof board, circular edging process, thickness 25mm, depth 300mm, refined by PVC edge banding on both sides, firm and durable, non-fading, fixed type;

　　Layer board: It is made of MDF board with fireproof board, thickness 16mm, depth 200mm, refined by PVC edge banding, firm and durable, non-fading, fixed type;

　　Plastic parts: high-quality PA6 raw material injection molding;

　　Recovery function: The chair seat adopts gravity recovery structure, built-in silencer, without any noise, zero mechanical failure, durable.

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