... Chungking bristle norm.Quick DetailsType: Bristle Source: Pig Color: White Ingredients: 90% tops Certification: iso Packaging: 25kgs per ... requirementBoiled bristles: 1) Color: Black, Natural white, Grey ,Brow, Bleached ,Rewash white,Dyed black2) Length: 44/51/57/64/ ... carried out according to Chungking bristle norm, with the raw materuals originated in Sichuan Province, Guizhou Province, Yunnan ...