Air cooler 1.Customized or design service; 2.Good quality & reasonable price; 3.LR,DNV,ABS,GL,SGS certificate. ... service;2.Good quality & reasonable price;3.LR,DNV,ABS,GL,SGS certificate.Zhonghai Air cooler (SINOMEC) is widely used for main engine ... steel, etc.End cover: Welding part or casting. Air cooler for ME