In addition to gold, platinum and other materials, silver jewelry has won the favor of young people with its price and variety. However, silverware, which was originally beautiful, if it is not pure silver, but contains harmful metals such as lead and antimony, may penetrate into the body through the skin to affect health, and may even lead to disease. It is understood that since the official implementation of the National Standard for the Limitation of Harmful Elements in Jewelry on May 1, 2013, there are still many businesses ignoring this regulation, and most of the silver jewelry ingredients are vaguely labeled, the market is chaotic, and some are more There are no signs in the products in the silverware store, and even the shopping guide can not tell its ingredients and purity. In some silver shops, it can be seen that most of the silver pendants are basically engraved with the words "990" or "925", but on some accessories, no information is seen, the clerk's reply is: "Definitely In sterling silver, it may be that the manufacturer forgot to engrave the purity." As for whether there are other ingredients in these accessories, the store's sales staff can't answer. A silverware counter shopping guide said: "Silver jewelry is generally divided into three levels of '925', '990' and '999', and according to such classification and grams, the price is also ranging from 20 yuan to 300 yuan. If some small shops sell particularly cheaply, they are all silvery." According to the person in charge of a silverware store, the silver jewelry on the market is not marked except for the purity of silver. Most of the other metal components are not introduced, which leads to consumers misunderstanding when purchasing. These other metals, which are not willing to express, are likely to cause physical damage to the wearer. According to industry insiders, as the market supervision is still relatively vacuum, some of the mixed-cells and shoddy silver ornaments are still flowing smoothly in the market, causing hidden dangers for consumers to purchase. Therefore, when consumers purchase such products, they should go to professional shops and professional counters to purchase silver jewelry that has passed the inspection. They must not be cheap, and easily believe in business promotion and purchase inferior products that harm the body.
The cooling clothing is made for laborers who work in hot environments. By staying comfortable and cool throughout the work experience, laborers can concentrate on the job instead of being distracted by trying to minimize the physical effects of hot environments. The following is a list of just a few kinds of laborers that are currently using this A/C technology:
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