A sweater is a sweater made of wool either by machine or by hand. In the primitive days, humans used leaves and animal skins to cover their bodies. In the fishing and pastoral days, they wove nets to catch fish and thus knew how to use weaving techniques. With the evolution of civilization and the invention of technology, humans not only made full use of various natural fibers from animals and plants to weave the items needed for life, but also developed a variety of chemical fibers and mineral fibers, making human life more comfortable and convenient. Men's knitted sweater Before washing a sweater, you should first pat off the dust on it, soak it in cold water for 10 to 20 minutes, then take it out, squeeze out the water, and gently rub it in a solution of laundry detergent or soap flakes. Finally, rinse the sweater with clean water. To ensure the color of the yarn, 2% acetic acid (vinegar is also acceptable) can be added to the water to neutralize the soap remaining in the sweater. After washing, squeeze out the water from the sweater, disperse it, put it in a net bag, and hang it in a well-ventilated place to dry. Do not twist or expose the sweater to direct sunlight. 2. Washing sweaters (threads) with tea water not only cleans the dust off the sweaters but also prevents the threads from fading and extends their service life. The method of washing a sweater is as follows: Use a basin of boiling water, add an appropriate amount of tea leaves, wait for the tea leaves to fully steep, and then let the water cool down. Strain out the tea leaves, soak the sweater (thread) in the tea water for 15 minutes, then gently rub the sweater a few times, and then rinse it thoroughly with clean water, squeeze out the water, shake it apart, and the thread can be directly held in a cool place to dry. To prevent the sweater from deforming, it should be put in a net bag and hung in a cool place to dry.