Laskaridis has agreed to take two 75,200 dwt newbuilds from another Chinese builder, Penglai Zhongbai Jinglu Ship Industry.
The panamax vessels are described as for prompt delivery and the price could be as low as $23m apiece, according to shipping sources.
With delivery next month of a final vessel in Laskaridis' initial newbuilding programme of panamax, kamsarmax and post-panamax bulkers, the company will have a dozen brand-new bulkers, plus a further four on order, alongside its fleet of reefers, fish factory vessels and tankers.
Meanwhile, the Greek owner has recently added additional orders for a pair of ultramax bulkers at China's Jinhai Heavy Industry and the series has been expanded to four firm vessels plus another two recently-added options.