Wössner forging pistons

Hello I bought from ebay Wössner forge pistons. When I unpacked these I realized that on the piston inside “JE” is punched in the writing like “JE Pistons”. Are these not Wössner forge pistons now but JE forge collapses? A number is also punched in on top of the piston. Or works Wössner and JE together? ( Always thought JE pistons are from the USA…) Basically it’s for me who built them, but I have to order a reorder because it’s no problem. r 3 pieces are…. Maybe someone can help me…… Thanks greeting Hias