Method for packing with catalyst for {HEAD ~ synthesis} of unsaturated aldehyde and {TAIL ~ unsaturated carboxylic acid} 
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Method for packing with catalyst for { HEAD ~ synthesis } of unsaturated aldehyde and { TAIL ~ unsaturated carboxylic acid }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL