Split or reorder table based on columns

hi,

How can I reorder the following data? depending on the columns. and Delete the lines that do not have data.

LOCAL SKU LOTE VENDOR1 VENDOR2 VENDOR3
1 145B QW8 20 30 50
2 256E RD95 25 [/color] 5
3 356Y GH23 63 10 30

desired result


LOCAL SKU LOTE Cant
1 145B QW8 20 VENDOR1
2 256E RD95 25 VENDOR1
3 356Y GH23 63 VENDOR1
1 145B QW8 30 VENDOR2
3 356Y GH23 10 VENDOR2
1 145B QW8 50 VENDOR3
2 256E RD95 5 VENDOR3
3 356Y GH23 30 VENDOR3