Under the pessimistic overcapacity of the photovoltaic industry, Silicon King Tongwei Co., Ltd. made another move to expand production.12On the evening of the 25th, Tongwei Co., Ltd. (600438.SH) announced that it would invest in the construction of a green substrate integration project in the Zhunger Economic Development Zone, Zhunger Banner, Ordos City, with a total investment of about 28 billion yuan, including an annual output of 500,000 tons of green substrates (industrial silicon), 400,000