Group 1 - The Fourth China-Africa Economic and Trade Expo will be held in Changsha from June 12 to 15, showcasing the achievements and potential of Yutang District's economic cooperation with Africa [1] - Xiangtan Steel Group is the largest production base for wide and thick plates globally, with a strong manufacturing level in various industries, including shipbuilding and engineering machinery [1] - Xiangtan Steel will promote special steel products used in shipbuilding, engineering machinery, and high-rise bridge construction at the expo [1] Group 2 - Xiangtan Electric Chemical Co., Ltd. is a leading producer of electrolytic manganese dioxide and other new energy battery materials, with products exported to over 20 countries [2] - The company will showcase various battery materials, including alkaline electrolytic manganese dioxide and nickel sulfate, targeting new energy power battery manufacturers [2] - The Xiangtan Central International Machinery Park will host a remanufacturing exhibition from June 13 to 15, featuring multiple local companies [2] Group 3 - Xiang Electric Group provides services for power, energy, mining, and other sectors, showcasing models of heavy equipment and smart energy solutions at the expo [3] - Xiangtan Danno Electronic Technology Co., Ltd. will present enamel kitchenware products, while Xiangtan Jiayuan Trading Co., Ltd. will display various types of tea exported to Europe and Africa [3] - The "Xinhua Zhai" brand will exhibit traditional pastries, contributing to the diverse offerings aimed at enhancing Yutang's foreign trade [3] - The event aims to help local companies expand into international markets and enhance brand influence, promoting high-quality regional economic development [3]