Two sister ships from the same cabin broke through on the same day, and two self-developed Asian ultra-large dredgers successfully launched in China.

Journalists learned on August 26 from the Tianjin Navigation Bureau of China Communications Construction Company that the company's self-designed, developed, and built 35,000 cubic meter cabin class ultra-large bucket suction dredger "Tongjun" was launched. Also launched at the same time was the "Junguang" wheel of the same cabin capacity, belonging to the Guangzhou Navigation Bureau of China Communications. The simultaneous launch of the two bucket suction dredgers marks a breakthrough, signaling that China has taken the lead in the international field of large-scale dredging equipment.