How to identify LV bag authenticity

1.[grain] LV printing is with special canvas plus fuel and prevent cross resistant material, so on the surface of the grain line particularly evident. And the source of the replica louis vuitton is different, some of the material of the mainland is poorer, most with poor compound is made, and the luminosity, smooth surface, the concave-convex feeling greatly weakly.
2.[material] new light skin LV (blue or brown) material is very pretty, and false of light skin LV is made of plastic, so the soft.
3.[stitching] really LV (printing) of the darker stitching, with makings is especially strong waxy "to make, so very durable. False L.V. (printing) stitching is light color, use common cotton thread to make, so easily broken.
4.[printing] early (60 s) LV printing with green, and more recently with brown. LV printing on both sides of the early symmetrical, but recent does not well-balanced. replica louis vuitton printing a slant deep brown, some are partial shallow brown, and printing can be do it