(1)suitable for classroom 100-10000 (2)Ultra-low particle (3)color available:yellow,blue,white,pink,light green (4)easy type Beekin cleanroom products offer you a complete for stationary use in any cleanroom manufacturing environment.Elements of the system include latex-impregnated and synthetic bonded forms,spiral and perfect bound notebooks,ESd safe and polyproplene clipboard,three-ring ...