With a daily output of more than 654.38+10,000 pieces, it is an old factory with a history of 15, but it has only been opened for one year since 1688. The heating underwear sold by his family is velvet, and there are similar household clothes, such as the seamless one-piece corset of Youjia.
To put it another way, HEATTECH heating underwear promotes "absorbing moisture emitted by the body and converting it into heat energy". It's black technology, super mysterious, but the ingredients on the list are acrylic, polyester, viscose and spandex.
In fact, heating fiber is not the exclusive black technology of Uniqlo. There are three common brands in the market: Derong, Selam and Meiyabi, which are from Bayer in Germany, Mitsubishi in Japan and Toyo Textile.