Thailand’s Regional Container Lines has returned to CSSC Huangpu Wenchong for another four containerships, adding a new 3,100 teu class to its rapidly expanding orderbook at the Guangzhou-based builder. RCL signed for four of Huangpu Wenchong’s in-house Honghu-series ships, taking its programme at the yard to 16 vessels across three designs — eight 4,488 teu …