Elektrisch· Rsachiner,, Apparate und QarBte ao­ne andere elektrotech­niech« Waren, euBganom­ •olchs dar Tarif­, 85.14 und 89.19 ###>Working, processing or assembly in which the value of the non­originating materials and parts used does not exceed 40?· of the value of the finished product, end provided that: