OF EVAPORATORS. PARTS. LABORATORY APPARATUS DEVICES OR EQUIPMENT EVEN IF ELECTRICALLY HEATED (EXCEPT OVENS AND OTHER APPARATUS OF HEADING 851 4) FOR THE TREATMENT OF MATERIALS THROUGH OPERATIONS INVOLVING A CHANGE OF TEMPERATURE
OF EVAPORATORS. PARTS. LABORATORY APPARATUS DEVICES OR EQUIPMENT EVEN IF ELECTRICALLY HEATED (EXCEPT OVENS AND OTHER APPARATUS OF HEADING 851 4) FOR THE TREATMENT OF MATERIALS THROUGH OPERATIONS INVOLVING A CHANGE OF TEMPERATURE
OF EVAPORATORS. PARTS. LABORATORY APPARATUS DEVICES OR EQUIPMENT EVEN IF ELECTRICALLY HEATED (EXCEPT OVENS AND OTHER APPARATUS OF HEADING 851 4) FOR THE TREATMENT OF MATERIALS THROUGH OPERATIONS INVOLVING A CHANGE OF TEMPERATURE
OF EVAPORATORS. PARTS. LABORATORY APPARATUS DEVICES OR EQUIPMENT EVEN IF ELECTRICALLY HEATED (EXCEPT OVENS AND OTHER APPARATUS OF HEADING 851 4) FOR THE TREATMENT OF MATERIALS THROUGH OPERATIONS INVOLVING A CHANGE OF TEMPERATURE