Between 1975 and 1982, Western Japan Trading continued to receive contracts for various workboats such as tugboats, crane ships, and floating docks. (061: Shijiusuo, 064: Ningbo / Baoshan, 065: Guangzhou)

In order to respond to the rapid increase in imports and exports accompanying China's economic development, the expansion and development of foreign trade ports was advanced at a rapid pace during the 1970s and 80s.