Shefa Engineers Private Limited supplies Coach Washing System with Four Vertical Brush. Shefa Engineers Private Limited is an ISO 9001:2000 recognized company. Coach Washing System with Four Vertical Brush is capable of washing all types of large coaches. Coach Washing System with Four Vertical Brush is built using rigid and galvanized frames and it has the flexible capability of providing complete washing of coaches. Coach Washing System with Four Vertical Brush can usually be installed on any existing wash bay or hard standing area.