SHANGHAI, Nov 18 (SMM) - According to SMM research, the bonded zone inventory rose slightly to 4,800 mt this week. The inventory of nickel briquette was 1,050 mt, and that of nickel plate stood at 3,750 mt. Spot import losses soared to around 35,800 yuan/mt as the SHFE/LME nickel price ratio fell to 7.04 affected by the price difference between the domestic and overseas futures prices, thus only a small amount of nickel plates were moved into the bonded zone warehouses to wait for customs clearance.