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Handbook for the Montreal Protocol on Substances that Deplete the Ozone Layer
… � � � � � � � � � � � � � � � � � � � � � 371 Decisions on customs codes�� � � � � � � � � � � � � � � � � � � � � � � � … controlled substances specified in Annex A No. Products Customs code number 1 Automobile and truck air conditioning … similar non‑commercial situations normally exempted from customs attention. *** When containing controlled substances …