After inquiring about the website of Youji, it is still in production and has not stopped production.
Nantong Tongfang Semiconductor Co., Ltd., a wholly-owned subsidiary of Tongfang Co., Ltd., is an industrial base of high-brightness LED chips and application products built by Tsinghua Tongfang in Nantong Development Zone, Jiangsu Province, and is responsible for the industrial production of LED epitaxial wafers and chips.