If the fabric is indigo dyed in the province. Think of indigo dyed cloth of women's groups Agriculture Ban Tham Tao district harmonious development. district permitting Indigo dyed cloth are interested and want more. The indigo-dyed cotton quality Still less to market As dyed indigo Quality. The market lot The dyed indigo blue or quality. The color is darker or lighter color was bright, clean, lasting colors which do not fall as a result of these qualities. The quality of ingredients and the expertise of the manufacturer and the preparation of indigo dyed with indigo dyeing techniques than other natural choice, starting from the leaves of indigo was fit and in its leaves. So to keep the sky was about 3-4 months in the early morning before the dew dries. And the amount of water flooding the sky and I immediately immersed for about 18-24 hours spent immersed more or less than this amount will be less than the blue. Immersion in water, not frozen, fresh leaves of indigo blue of the water, like boiling the bark. But the infusion of two kinds of chemical reactions occur in fresh leaves of indigo blue is water soluble. If the leaves of indigo dry chemical waste in natural indigo. Can react with another substance was. So, if allowed to dry before the war and bring the water to soak in the water is not blue. Similarly, boiling the leaves of indigo was not blue as well. We can be dyed in indigo immersion in water, known as the water was indigo. But to do a quick race against the weather. Because indigo immersion in water is a substance that reacts with the air has become indigo color. Blue insoluble Can not seep into the meat of the island cotton had simply said it was indigo blue dye is not. But the indigo blue water to ferment in the ashes in an appropriate ratio. And adjust the pH to the optimum turns indigo blue as indigo, yellow, water-soluble ash. The blue color is reacting well to the air, as well as indigo blue with indigo immersion in water. The surface of the water is dyed blue and the water below dyed yellow. The blue dye indigo is yellow. No indigo blue