SHANGHAI, Nov 25 (SMM) - As of November 25, bonded zone inventory of nickel stood at 5,180 mt, up 380 mt from November 18. The inventory of nickel briquette and nickel plate was 1,250 mt and 3,930 mt respectively. Imports of spot pure nickel suffered losses as the SHFE/LME nickel price ratio dropped to around 7.5. Higher bonded zone inventory this week was contributed by the delivery of long-term orders for nickel briquette signed by some domestic salt plants.