How many cloth dyeing factories are there in Zhangjiagang?

1 1. Zhangjiagang has 1 1 cloth dyeing factory. Dyeing cloth refers to dyeing cloth to the required color, which is generally done through a dyeing workshop (also known as dyeing vat workshop and dyeing cloth workshop). Dyeing cloth has a history of more than 2800 years. According to ancient documents and modern archaeological discoveries, the history of weaving and dyeing technology in China can at least be counted from the Western Zhou Dynasty. During the Western Zhou Dynasty, the weaving and printing processes such as sericulture, reeling, silk weaving, hemp planting, pueraria picking, silk weaving, printing and dyeing began to have a special division of labor. During the Qin and Han Dynasties, weaving and dyeing made great progress, with more varieties and improved dyeing technology. Zhang Qian opened the Silk Road in Han Dynasty, which promoted the development of folk arts and crafts in Han Dynasty.