Wipers are sometimes dirty.

Analysis of the reason: the quality of the wiper you use is average! With the first use of boneless wiper, a new revolution of wiper has been brought, and the wind of boneless wiper has been blown up in China. China people aim at this business opportunity and follow the example of manufacturing or assembly. For a time, hundreds of brands appeared in the market. Some brands, without strong financial strength and strong technical support, only went public by assembly and packaging, and only won market share at ultra-low prices, making consumers unable to make correct judgments. Therefore, car owners should not blindly believe in boneless wipers, because bad boneless wipers lead to unclear vision and frequent traffic accidents. What I want to tell you here is how to judge the quality of boneless wipers. 1. Manufacturer: At present, there are four types of businesses on the market, 1, which have been developing and producing wiper for many years. The main components are produced by ourselves, with excellent technical support and quality assurance, such as Bosch, Valeo, TRICO and SANDOLLY in China. 2. One or more main components are developed and produced by ourselves. They buy better quality parts from excellent suppliers for reprocessing. All parts are purchased from others and then assembled. They lack technical support and have been pursuing low-cost investment to earn market share at low prices. 4. Buy finished products directly from others, and then package and brand them. Therefore, either the cost remains high or the product quality is low, and some domestic manufacturers provide OEM products to other manufacturers and traders at low prices. Second, product packaging: from the packaging point of view, all formal product packaging will be marked with information such as name, specification, model, manufacturer, address, service phone number, Chinese and English trademarks, etc., and the handwriting is clear, the overprint is accurate and the color is bright. At present, 80% of inferior wiper products on the market do not have these, and some products use a lot of foreign languages such as English and Japanese on the packaging to fool consumers. The quality of these products is not guaranteed. If the car or human body is damaged by using these products, no one will bear it. Therefore, consumers should never buy such products when they see them, lest the loss outweigh the gain. Third, the surface of the product From the point of view of the product, the wiper surface of a good product (bracket, rivet, adhesive tape) is smooth and flat, with fine workmanship, clear signs and rust-proof metal parts. However, due to the technical limitations of the manufacturer, the cooperation between components is not very good, so the appearance of the product is flawed. Fourthly, the market of boneless wipers with adhesive tape is quite chaotic. Generally, the domestic wiper is not very clear about 3 months. This is because there is something wrong with the rubber formula. World-famous wiper manufacturers all have their own unique rubber formula, such as Bosch, Valeo, TRICO and SANDOLLY in China. Domestic boneless wiper strips are generally produced by some non-professional manufacturers. The rubber formula technology of these manufacturers is far from that of professional wiper manufacturers, which can not guarantee a long life. The good rubber strip is pure natural rubber, and the inferior product is synthetic rubber, which is not durable. How to tell if it is a good tape? First, look, natural rubber is naturally black visually, while synthetic rubber is particularly black or a little white. Second, grab, pull or roll up the rubber strip and squeeze it hard, then let go to see the resilience of the rubber strip. If the deformation is serious, it is defective. Third, see if the blade is straight. There are impurities or poor points on the blade, and there will be waterline when scraping, which is unqualified. In addition, most wipers now spray graphite powder on the rubber strip. If the graphite powder feels rough or falls off easily, it is unqualified. At present, the better products on the market are: 1, Bosch: a world-famous brand with good quality, but expensive, and most of them are counterfeit products on the market; 2, Valeo: It is also difficult to buy genuine products on the market; 3, Japan's NWB: Denso, 70% of Japanese cars use this wiper; 4. Sandoli: a well-known domestic brand with guaranteed quality and reasonable price. In addition, the author would like to remind everyone that the inferior boneless wiper can not fit the glass well, so it is not as clean as the traditional wiper, and sometimes it makes noise and even hurts the glass. Traditional wipers do not need to exert high pressure on the wiper arm. As long as there is a little pressure, the wiper blade can stick to the glass well. However, the boneless wiper requires that the pressure of the wiper arm must be large. If the pressure is too small, it is easy to cause the wiper to fly in the middle and can't scrape the glass. Therefore, the author suggests that if you buy boneless wipers, you'd better buy brand-name products, such as those of the above brands.