MATERISL:GLASS+PTFE、BRONZE+PTFE、BRASS+PTFE、GLASS FIBER20%+GRAPHITE5%+PTFE
MATERISL:PTFE、GLASS FIBER+PTFE、BRONZE+PTFE、BRASS+PTFE、GLASS FIBER20%+GRAPHITE5%+PTFE、CARBON+PTFE、CARBON+FIBER+PTFE、CARBON+GLASS FIBER+PTFE
MATERISL:PTFE、CARBON+FIBER+PTFE、GLASS FIBER20%+GARPHITE5%+PTFE