Diem Thuy Industrial Park was approved by the Prime Minister in Document No. 1854/TTg-KTN dated October 8, 2009 by the Prime Minister on additional adjustment of industrial zones in Thai Nguyen province to 2015 and orientation to the year 2015. 2020, located in two districts, Pho Yen and Phu Binh. The total area under the approved planning is 350ha. In which, Area A: an area of 180ha invested by the Management Board of Thai Nguyen Industrial Parks. Area B has an area of 170ha, invested by APEC Thai Nguyen Investment Joint Stock Company.