... delivery, good service 5. OEM is welcomed Calendar Specification: MaterialCoated paper(128 gsm, 157 gsm, 200 gsm, 250 gsm, 300 ... gsm)Grey paper(600 gsm, 900 gsm, 1200 gsm)SizeVarious Sizes, According to ... , etc.Binding:Perfect bound binding, Wire, Spiral, Gluing, 3D book binding, Thread sewing binding, Square back binding, Round back binding, Head and Tail binding, etc. ...