The sum is accumulated from 40 new foreign-invested projects and 39 existing projects that are adjusting capital for expansion purposese, according to Dong Nai Industrial Zones Management Authority (DIZA).

According to Nguyen Tri Phuong, director of DIZA, most of the projects are in semiconductors, electronic components, and mechanical engineering, with no projects being deemed environmentally unfriendly.

Most of the newly granted projects utilise advanced technology, like the Silicon Carbide Vietnam and Advanced Optics projects by the US' Coherent Corporation, worth $83 million. The projects specialise in manufacturing instruments used in high-tech electronics.

Singapore was the largest investor in Dong Nai in the first five months of this year, with investments across nine projects worth $231.7 million, accounting for almost 45 per cent of the FDI total.

Dong Nai industrial zones also took in nearly VND2 trillion ($78.5 million) in domestic capital, fulfilling a little over the entire year's target in just five months.