What is the difference between the indigo ancient method of building a tank without adding rice wine

There are differences in the dye pot formulas and various additives used in Indigo Ancient Builders No Rice Wine. Natural indigo is one of the oldest dyes in the world. Traditional indigo dyeing is still practiced in various forms around the world. Dyers use purely natural and organic additives to configure the vat for dyeing, but this is a complex fermentation process, and there are variations in the vat formulas and various additives used by dyers from different regions, ethnic groups, and even the same ethnic group in the same region. In industrial indigo dyeing, the conversion of indigo into a soluble dye solution requires the use of a strong reducing agent, sodium dithionite, which has a serious impact on the ecosystem and human health.