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3dm, stp
3dm, stp, igs
obj, 3dm, stl, stp, igs, x_t
stp
step
stl, step
igs, step
igs, step, x_t
stp, igs
stl, stp
sldasm, step
sldprt, step
obj, stl, step, x_t
3ds, 3dm, stp
obj, 3dm, stp