Japan's NYK Group has temporarily halted its Japan-China Express (JCX) service, where the ports of call include the tsunami hit Sendai port. The Tokyo-based shipping firm announced the suspension on its website. It did not say when the suspension will be lifted. The JCX 22-day port rotation calls start and end at China's Shanghai port, passing by four Japanese ports and two US ports. Sendai port has been shut since last Friday when a 8.9 magnitude earthquake triggered a tsunami that devastated the northeastern part of Japan.