Also is offset lithography in china , and adopt multi-colour offset printer printing . Usual machine have Heideberg , Roland , Mitsubish etc. Net point printing toning for adopt CMYK four colour , and in focus is very high , the photo line elememt on top of 175 ,and is accomplished in a fine and gradual solid effect . Briefness description is may be would numeral photo effect completeness printing copy . So that the offset pyrograph widely all kinds of fabric , and by advertising widely apply . Usual apply on T-shirt ,advertising shirt , cat , schoolbag , bag etc.