For comparison of two .csv files, the list of open/open products is on the output:
1) Who is on chinagifts but not in fengshui
2) which is on fengshui24, but the same goods on chinagifts are hidden
3) Who is on fengshui but not in chinagifts
1) Who is on chinagifts but not in fengshui
2) which is on fengshui24, but the same goods on chinagifts are hidden
3) Who is on fengshui but not in chinagifts