21, Quartz announced that the company and the Management Committee of Jiangsu Donghai Economic Development Zone had recently signed a Letter of Intent for Investment, which will invest in the construction of a project with an annual output of 3000 tons of electronic-grade quartz materials in Jiangsu Donghai Economic Development Zone, with a total investment of 1.03 billion yuan. The funds come from the company's own funds, bank loans, equity financing, etc. From January to December
2022, the operating income of quartz shares is composed of photovoltaic accounting for 64.54%, optical fiber semiconductor accounting for 18.47%, and light source accounting for 16.34%.