Please Help w/bottles

[SamadaX]

I have several bottles that my fiance found while working at a site they are developing. One is a 10-oz Pepsi bottle on the top above Pepsi logo it says NO REFILL on the opposite side above logo it says DISPOSE OF PROPERLY. On the bottom of the bottle it say has X then a L inside of a square and 157 below that it has 57 can anyone help? I will check in on the others in another post.