we are the leading manufacturer of all kinds of sulphur black from china.as usual , the packing is in 25 kg plastic woven bags , if you have any special require , we can meet further. we also have 25kg iron drum, 800kg bulk bags and ect .our supply ability is 20, 000mts per year . we will enlarge our quantity of production this year and the other color of sulphur dyes will be producted soon!your special require will be highly noted and given quick reply!Major Products and Services:sulphur black br 200%, sulphur black br 240%, sulphur black br 180%, sulphur black br 170%, sulphur black br 160%