Paper Tube With PVC Window: 1, Free design service. 2, Short production lead ... art paper (128g, 157g, 200g, 250g, 300g)duplex board with grey back (250g, 300g, 350g, 400g)grey paper (250g, ... /customized artwork accepted.==================================================================== Our Certificates:=================================================== Production Process: Paper Tube With PVC Window