SHANGHAI, Sep 30 (SMM) - SMM research showed that the bonded zone inventory stood at 4,300 mt this week. The inventory of nickel briquette was 1,650 mt, and that of nickel plate was 2,650 mt. In late September, nickel prices surged before dropping, thus the domestic spot trading improved, and the spot imports gained profits this week, pushing up the clearance volume. In addition, before the National Day holiday, downstream companies were busy in restocking, thus the bonded zone inventory of nickel plates and nickel briquettes decreased.