Yichang marine diesel engine co., ltd

Wuhan marine machinery co., ltd

Chongqing hongjiang machinery co., ltd.

Chongqing jiangzeng machinery co., ltd

Chongqing gearbox co., ltd

Wuhan heavy industry casting and forging co., ltd

Chongqing changzheng heavy industry co., ltd

Dalian marine propeller co., ltd

Dalian marine valve co., ltd

Tianjin Suo Qi High-Tech Co., Ltd.

Lianyungang jierui mold technology co., ltd

Qingdao jierui automation co., ltd

Luoyang Qiwei antisepsis engineering material co., ltd

Qingdao shuangrui marine environment engineering co., ltd

Xiamen shuangrui marine coatings co., ltd Dalian shipbuilding industry group co., ltd.

Bohai shipping heavy industry co., ltd

Qingdao beihai shipbuilding industry co., ltd.

Shanhaiguan shipbuilding heavy industry co., ltd.