... FDA certificate SWS (single wounded sheet), CF (centerfolded film), tube film, shrink bags Polyolefin shrink film ( Verified by SGS, FDA certificate)1. made of ... special-shaped products as well as smooth and natural wrapping. 4. Airproof wrapping, dust and damp resistance.5. light but ... 19 micron, 25 micron, 30 micronSingle wounded sheet, centerfolded film, tube film and shrink bags shrink wrap film