SHANGHAI, May 13(SMM) - Total zinc ingots inventories across seven markets in China stood at 266,900 mt as of Friday May 13, down 9,100 mt from May 9 and 14,200 mt from May 5. Inventory of zinc decreased further this week. In Shanghai, the fall of zinc prices boosted the market purchasing sentiment after the recovery of pick-up. And due to the extremely low arrivals in Shanghai in recent times, the inventory in Shanghai decreased sharply. In Tianjin, as the raw material inventory of enterprises hovered at a low level, the downstream restocked actively after the sharp fall of zinc prices. In the case of improved consumption and the demand for restocking, inventory in Tianjin reduced sharply. In Guangdong, with stable arrivals and modest operating rates of die-casting enterprises, the purchases in downstream for rigid demand lowered, leading to a slight increase in the inventory. Inventories in Shanghai, Guangdong and Tianjin dropped 9,900 mt and inventories across seven major markets decreased 14,200 mt.