... felt,non-woven needle felt fabric,punch nonwoven fabric,antistatic needle felt, antistatic needle punched felt,antistatic nonwoven fabric,antistatic filter bagchemical dust and coal ... used to make bags containing these dust must be antistatic. Features:Product name:anti-static polyester needle punched ... Instant: 150 Surface treatment: singeing, calendering, heat setting Antistatic needle punched felt