The document is about how to open the bus bar(wire) for the PDLC film. When you know this process, you will know how to did it well. The PDLC film can turn from opaque to transparent by remote control or switch, you can laminate it into 2 pcs of glass or stick it on the glass, it can achieve the privacy and public space by your own. apply to the shower door, office, exhibition or hotel, interior design.