[Shanghai zinc ingot inventory slightly destocked, spot zinc discounts narrowed]: This week, spot discounts in Shanghai narrowed, with the weekly average price up 20 yuan/mt WoW. As of Friday this week, ordinary domestic brands were quoted at discounts of 10-0 yuan/mt against the 2607 contract, while the high-priced brand Shuangyan was quoted at a premium of 60 yuan/mt against the 2607 contract.