According to the history of sericulture. the domestication and utilization of the silkworm as a source of silk began in the Shang-tung province of China around 3000 BC. and silk weaving began 2700 BC. Only intimate members of the imperial family and women of high birth were allowed to work in the manufacture of cocoons and silk in ancient China. https://halohealthcarers.shop/product-category/humidifires/