... excellent,smooth surface,Role long shelf life,strength,durability.not curly,beautiful with age..The main wood is 3*9 and ... flame retardant,antistatic,breathable,high spring back properties,widly used to make mattresses,sofas,cushions and other furniture.3) Spring: ... bag 4.Corner protection:foam and corrugated cardboard wrappingb:According to customers' requestsPayment Term:T/T: 30% deposit, 70% balance ...