Tianjin Zhonghuan Semiconductor Co., Ltd. (TJSEMI) specializes in the manufacturing and marketing of integrated semiconductor devices for solar energy saving industry. Net sales break down by activity as follows: - manufacturing of semiconductor materials used in the renewable energy industry (91.1%): monocrystalline silicon wafers, photovoltaic cells, solar modules, etc. used in photovoltaic power generation facilities, new energy electric vehicles, wind inverters and smart transmission networks; - manufacturing of semiconductors for the consumer electronics industry (8%); - services (0.1%); -other (0.8%). China accounts for 75.3% of net sales.