THÁI NGUYÊN — Sunny Optical Technology Group and the leaders of Thái Nguyên Province on Wednesday signed an agreement on investment expansion worth US$2.5 billion under the presence of Deputy Prime Minister Trần Lưu Quang. To date, Sunny Group has invested in four projects in industrial parks in Thái Nguyên, Vĩnh Phúc and Hà Nội provinces. Of which, Sunny Optech's investment in Thái Nguyên is worth $110 million. From 2010, Thái Nguyên has made spectacular progress to become a bright spot in attracting FDI. Up to 2022, the province has 197 valid projects with a total registered investment capital of about $10.4 billion, ranking 11th nationwide.