Standard configuration instructions

　　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 backboard: Seatboard multi-layer plywood is hot-pressed and spin-cut, with fireproof board on the outside, environmentally friendly paint edge banding around, moisture-proof and durable, the thickness is not less than 15mm; the backboard is stamped with high-quality steel plate die With ventilation holes;

　　Writing desk: Adopt MDF surface with fireproof board, depth 300mm, thickness 25mm;

　　Booknet: high quality cold rolled steel φ5 * φ3mm welded;

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

　　Recovery function: The chair seat adopts spring recovery structure, instantaneous return; the spring is made of high-quality spring steel 60SiCrMn after heat treatment and anti-rust plating treatment. After the spring is processed, fatigue is prevented, which ensures that the spring is 150,000 times No failure under normal use.

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