3d lenticular bookmark,3d bookmark manufacture,3d lenticular printing service back printing/size/disgns customized 3d lenticular bookmark,3d bookmark manufacture,3d lenticular printing service1,method3D lenticular printing,3d lenticular products ... ,MaterialNo-toxic moisture proof , all of material we use of high quality and environmentally friendlyPET : 200Lpi 0.18mm, 161Lpi 0.3mm, 100Lpi ...