SHANGHAI, Mar 4 (SMM) - As of March 4, the zinc ingot inventory across the seven major regions in China totalled 284,200 mt, up 700 mt from Monday February 28 and up 7,800 mt from last Friday February 25, according to SMM data. The inventories in Shanghai increased significantly as the increase in downstream demand fell short of expectations while the arrivals were relatively stable. Despite high zinc prices, the inventory in Guangdong declined as demand continued to improve amid downstream production resumption. In Tianjin, downstream consumption improved only slightly, and the inventory increased slightly. The total inventories across Shanghai, Guangdong, and Tianjin rose by 8,800 mt from last Friday.