Germany's GEFO is expanding its fleet with six new tankers ordered in China.
Brokers said AVIC Dinheng will deliver three of the 3,600-dwt chemical and products carriers in 2020 and three in 2021.
No price was given for the deal
Hamburg-based GEFO has 10 tankers operational.
Turkey's Tersan Shipyard built its four biggest vessels - 6,300 dwt - in 2014 and 2016.