... board (CHEMSURF) or armorplate glass (Color optional) , then processed with molding technology. 2, table bodyAdopt double-veneer, high pressure board ... machine. 3, electricity equipment:Adopt teaching safety main power, with control drawer, AC and DC current of low voltage. The teacher ... Sheltered or umbrella type , flex and spin freely, made with ABS engineer plastic. The frequency of aeration is not ...