Alps Chemicals Pvt. Ltd. Manufactures Direct Dyes for Cotton & Paper. Alps Chemicals Pvt. Ltd. Been awarded the ISO 9001:2000, ISO 14000 and ISO 18000 certifications. Different types of Direct Dyes for Cotton & Paper are ad follows: Alpatex Yellow Alpatex Orange Alpatex Blue Alpatex Red Alpatex Scarlet Alpatex Violet Alpatex Green Alpatex Black, etc.