Covering nearly 75ha in Phổ Yên City's Đông Cao and Tân Phú communes, the Tân Phú 1 and Tân Phú 2 industrial parks have a combined investment capital of VNĐ486 billion (US$21 million) while the Lương Sơn industrial cluster which spans 35ha in Sông Công City will cost more than VNĐ300 billion.