Is the silvery black body toxic? In ancient times, silver needles were often used for drug testing. So is the silver jewelry we wear today black is also a toxic performance of our body? Silver is black and has nothing to do with the body "In ancient times, arsenic was commonly used as a poison. Because the purification technology was not enough at that time, there was always some sulfur in the arsenic. The chemical reaction with silver was not arsenic, but sulphur." The jewellery expert made the silver enamel black. Scientific explanation. "If the silver jewelry we wear becomes black, is it because our body has excreted sulfur, and is this an unhealthy performance?" Many people have such concerns. "There may be such a situation, but it may also be that the sulfur content in the surrounding environment has risen slightly and reached a certain concentration." Experts say that it is not scientific to say that silver is black and the body is unhealthy. "The silver jewelry that we usually see is only a normal chemical reaction, and it is not directly related to health." Buy jewelry tips 1. Don't buy casual accessories on the stalls, you must go to a regular business to buy. 2. People with allergies, scars, children, and sweating are not suitable for wearing metal jewelry. 3. Put the weakly alkaline soapy water or facial cleanser in clean water, wait for them to dissolve, put the silver chain inside and float, then carefully scrub with glasses cloth, and the silver decoration is as bright as new. Supermarket, logistics industry Shrink Label,Pvc Shrink Label,Shrink Wrap Labels,Shrink Sleeve Label Guang Zhou SUNSEA Printing Technology CO.,LTD. , https://www.sansenprinting.com
With the development of market economy and the acceleration of commodity circulation, China's retail industry is developing at an extraordinary speed. According to the National Bureau of Statistics, there are 1,232 above-designated retail and restaurant chains in China, with a total of 34,551 stores. In the future, the market demand for variable information printing labels will be more and more, such as the supermarket fresh food, because of its fast circulation speed, rich profits, has been a "war", thermal label also has a great space for development. For example, luggage labels, supermarket price labels, storage and transportation labels, etc., have been widely used. In some European countries with developed logistics, the self-adhesive label used for variable information printing has accounted for more than 40% of the total demand of self-adhesive label market. In China, this market has just started, and the annual per capita consumption is very small. Foreign-funded retail giants and local private enterprises have taken becoming bigger and stronger as their future development direction. The logistics industry is an emerging industry, and many large and medium-sized cities in China hope to play the role of logistics center. The use of bar code for production management and logistics management, bar code sticker label is the most basic demand. In more enterprises to taste the benefits of bar code management at the same time, it will also bring unlimited business opportunities to the adhesive industry. With the rapid development of the logistics industry, the market will produce a huge demand for the variable information type sticker.
Anti-counterfeiting industry
Self-adhesive label has the characteristics of the application conditions in the anti-counterfeiting industry. The earliest anti-counterfeit labels in China appeared in the mid-1980s. They are used in the fields of wine, food, medicine, health care products, cosmetics, children's products, toys, clothing tags, shoe labels, computer hardware and software products, sporting goods, auto parts, agricultural materials and so on. There is a wide market development space in China for the use of adhesive anti-counterfeiting labels on commodities.