The most important thing about the jacket is not to wash it with a washing machine, but to wash it with water of about 40 degrees (do not use hot water), otherwise the waterproof layer will be separated from the base cloth under the strong pressure of the washing machine, which will seriously damage the waterproof performance of the clothes. Jackets are often worn for a long time, so don't mind washing them by hand. First, wash the clothes Second, local cleaning Third, the use of professional clothing cleaning agents Fourth, water repellent maintenance Five, drying
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First, completely soak the garment, then use a sponge or cotton cloth to directly wipe the surface of the garment with a proper amount of detergent. Neutral detergent must be used (the shampoo and detergent used in our daily life are neutral). Do not use bleach. Agent and softener. Simply lick and rinse to the water. 
First of all, when wearing, be careful not to get grease and hard-to-clean substances, reduce the number of cleanings, and prevent excessive damage to the film. If a certain part of the clothes is stained, the stain can be partially cleaned to avoid contamination with other parts and affect the overall appearance. It is recommended to use the universal foam cleaner. Shake well before use. Then spray the foam evenly on the surface of the garment at a distance of about 20CM from the stain. Wait 30~50 seconds, then gently wipe the stain surface with a cotton cloth. 
Professional clothing cleaners are suitable for cleaning waterproof and breathable fabrics, and can be used for jackets for better washing results. First completely soak the garment, then pour 100 ml of cleaning agent (suitable for two pieces of clothing) for about 10 minutes, then scrub with a sponge or cotton cloth. For local stubborn stains, use a sponge or cotton cloth to wipe directly with a proper amount of washing liquid. 
If you want the original waterproof and breathable jacket to maintain the original water-repellent effect, you should also use the washing-type waterproof clothing waterproofing agent for maintenance: put the wet clothes into the clear water (do not need to dry, put it directly) Pour 50 ml of water repellent (suitable for two pieces of clothing), soak for 20 minutes, then rinse with cold water until the water is clear. 
Do not use force to Screw after cleaning. Hang it in a ventilated place and spread it out. Avoid sun exposure and do not use the dryer. 
(1) are generally made of carbonized carbon steel (accounting for 99% of total production). It can also be made of stainless steel or non-ferrous metals.
(2) The product must be heat treated. Carbon steel tapping screws must be carbonized and stainless steel tapping screws must be solution hardened. In order to make tapping screws to meet the requirements of the standard of mechanical properties and performance.
(3) The product surface hardness is high, the core toughness is good. That is, "soft inside strong outside". This is a major feature of tapping screw performance requirements. If the surface hardness is low, it can not be screwed into the matrix; If the core toughness is poor, a twist will break, can not be used. So "inside soft outside steel" is self-tapping screw to meet the use of performance, very important requirements.
(4) The surface of the product needs surface protection treatment, generally electroplating treatment. Some product surface must be treated by phosphate (photostatting), such as wall panel self - tapping screws for photostatting.
(5) Production by cold heading process. It is recommended to use high-speed cold heading machine and high-speed wire rolling machine or high-speed planetary wire rolling machine. High speed is emphasized here to ensure product quality. Only the head of tapping screw produced by high-speed machine is well formed and the thread quality is high.