... etc.BindingPerfect Binding, Sewing Binding, Wire Binding, Spiral Binding, Plastic Comb binding, Thread Stitching, Saddle Stitching, Folded Leaflet etc.product ... s contact details if there's any in China.Lock plastic line loaded line refers to the pages together to wear, then glue ... way printing of each page.Benefits lock plastic line installed is to add fixed-line glued book block at the same time ...