Widthman Ltd is a leading manufacturer and exporter for all kind of envelopes,including box envelopes,manila envelopes, clasp envelopes, bubble envelopes, CD envelopes,Speed Post bags,foil bag and foil bubble envelopes,packing list envelopes, bubble wraps, address labels,wrapping kraft paper and other mailing supplies. We have full range of automatic machines with very special quality control system. Our main market is Europe and North America. Welcome to contact us and visit our factory in Shanghai.