The 40-million-USD plant is the first to be operating in the 1,010-hectare park in Hoa Vang District, 20km west of the city centre.
The plant will manufacture electro-magnetic and hydraulic equipment, targeting to export more than 50,000 digital directional valves per month for the Asia-Pacific region.
According to members of the managing board of the Hi-Tech Park, another Japanese investor, Niwa Foundry company, a partner of Keiki company, also has begun construction of its first engine castings plant, at a cost of US$30 million.
It's scheduled to be put into operation in 2016.
Japanese businesses have invested US$330 million in 68 projects in the city, employing more than 27,000 people.
