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