Mr HO Ka-kit, Dennis, says that the department developed “Tumbler Inspection Ball" (TIB) Robot last year to assist in monitoring conditions of rivers, drainage and sewage systems.

Mr HO Ka-kit, Dennis, says that the department developed “Tumbler Inspection Ball

Mr HO Ka-kit, Dennis, says that the department developed “Tumbler Inspection Ball" (TIB) Robot last year to assist in monitoring conditions of rivers, drainage and sewage systems.