Chinese solar-grade polysilicon producer Daqo New Energy Corp (<a href="https://www.nyse.com/quote/XNYS:DQ" target="_blank">NYSE:DQ</a>) plans to invest CNY 15 billion (USD 2.1bn/EUR 1.9bn) in the construction of an industrial park for silicon-based new materials in the Xinjiang region of China and thus secure its entire demand.