First of all we discuss about CBU

CBU unit mean all those vehicle which arrive in a country with completely build and ready to used.  This type of vehicle is called CBU unit.

SKD vehicle or unit

semi knocked down unit are assembled vehicles whose remain assembled is don in the target country. this type of vehicle are called SKD unit. Because these type of unit assemble in a country and their part manufacture other country.

Another Form CKD

completely assembled or manufacture in target country. totally part are assemble or manufacture in this origin country.