Core Viewpoint - Tianhai Defense has made significant progress in the marine engineering market by securing a total contract for six 65-meter anchor handling tug supply vessels (AHTS) through its subsidiary, Dajin Heavy Industry [1] Group 1 - Tianhai Defense's subsidiary, Dajin Heavy Industry, has successfully signed a total contract for six AHTS vessels [1] - The contract represents a new advancement in the marine engineering market for Tianhai Defense [1]