Steel poles are commonly used to carry several types of electric power lines, distribution lines and lighting system. Distribution lines carry power from local substations to customers. They generally carry voltages from 4.6 to 33kV for distances up to 30 miles, and include transformers to step the voltage down from the primary voltage to the lower secondary voltage used by the customer. A service drop carries this lower voltage to the customer's premises.
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A few days ago, the quality inspection of commodities in the mobile sector announced by the Beijing Municipal Administration for Industry and Commerce has aroused many people's attention. Among them, the news that 13 types of mats produced by manufacturers such as Zhejiang Double Gun were found to have exceeded the standard of carcinogens and were removed from the shelves. Questions have been raised about the health and safety of home life. In fact, as can be seen from the quality inspection reports in recent years, even at home, they may be in the same room as "poison" at any time, and materials, furniture , decorations, and other items used by the family may become a source of poison if they are careless.
Mattresses can also be a source of poison
In April of this year, the Beijing Consumers Association sampled and tested 50 types of mattress products on the Internet, including 37 spring soft mattresses and 13 brown fiber elastic mattresses. The test results showed that 25 of the 50 mattress samples had quality problems and the failure rate was as high as 50%. Among them, 8 samples of mattresses were tested for formaldehyde, and the highest exceeded the standard by 30%.
The mattresses that exceed the standard include the three samples of "Hoyada", "Powerful Supreme" and "Bernuo", and the two samples of "Aurayata" and "Huibao" in Tongzhou Tongshun Pearl Building Materials Market. In the online market, samples of "Qianyiai" sold in the flagship store of Qianyiai Furniture on Jingdong Mall and samples of "Leishu" sold on Amazon's Lei Shu Cupid were found to have exceeded the formaldehyde standard.
The author understands that, according to the requirements of national standards, the amount of formaldehyde released in mattress products should not exceed 0.050mg / m2 · h. Mattress products with excessively high formaldehyde content will gradually release free formaldehyde during use, causing harm to the human body. According to experts, the problem of excessive formaldehyde in spring soft mattresses is mainly due to bedding. If you use fabrics and sponges that already have formaldehyde exceeding the standard in the production of mattresses as a bedding, the filled mattress must also exceed the formaldehyde.
It is understood that some mattresses made of coconut palm or mountain palm bedding have particularly high formaldehyde. Experts pointed out that the main reason is that during the production of brown tablets, some manufacturers blindly added a large amount of adhesive in order to enhance the strength and hardness of the brown tablets. Although the physical properties of the brown tablets have been improved after this treatment, the adhesives The formaldehyde component will also be continuously released during use, causing serious exceedance.
Mattresses with excessive formaldehyde are extremely harmful. "Our children have red eyes and pain for a while, and their throats have been inflamed." Miss Huang was one of the victims of mattress formaldehyde. According to her, at that time, Miss Huang's family suspected that there was formaldehyde at home, but used Many methods to remove formaldehyde have been ineffective, and later invited a professional testing company to find out that it is a problem with the newly purchased mattress.
In fact, the author conducted a random interview in stores such as Jinhaima and Gaode Mercure and found that most buyers are completely unaware of the formaldehyde problem when buying mattresses. They only consider the hardness and style of the mattress and do not know much about the filler.
Experts pointed out that whether there is a problem with the mattress is relatively easy to see. First of all, the low-cost mattress must be a problem. Song Guangsheng, director of the National Indoor Vehicle Environment and Environmental Product Quality Inspection Center, believes that a 1.5-meter * 1.9-meter mattress needs to pay at least 400-500 yuan to ensure the quality of the filler, if it is lower than this price , There will be problems with the source of raw materials. In addition, if you smell an irritating smell or mildewy rot in the mattress packaging, it must be that the filler is using unqualified soft materials.
Sitting on the sofa can cause cancer
Sitting on a sofa, watching TV and listening to music is a matter of enjoyment, but if your sofa is made of cloth materials or covered with textiles, you must pay attention to it. At any time there is a source of poison for a family.
At the beginning of this year, there was a quality monitoring of household textile products on the market, and a total of 49 batches of textiles were unqualified in the random inspection, and 4 companies were found to have carcinogens in 5 batches of products.
It is understood that some textiles will contain "aromatic amine" azo dyes, which may be absorbed by the skin during long-term contact with the human body and diffuse in the human body under the biochemical reaction conditions that occur in human normal metabolism , Reduction reaction may occur to decompose carcinogenic aromatic amine. I have learned that this azo dye is the most versatile of synthetic dyes. There are many direct dyes, acid dyes, disperse dyes, reactive dyes, and cationic dyes are all azo dyes. Azo dyes have a wide chromatographic range, including red, orange, yellow, blue, purple, black, etc., with a full range of colors, good shades, and a certain fastness. Therefore, it is widely used in dyeing and printing of various natural and synthetic fibers.
The most frightening thing is that the toxic and carcinogenic properties of decomposable aromatic amines are much stronger than formaldehyde. Although formaldehyde is toxic, it also has a pungent odor, which is easier to distinguish and soluble in water. In general, if textiles have formaldehyde, most of it can be removed by washing with water. However, after being made into home textiles by decomposing aromatic amine dyes, it is not only insoluble in water, but also colorless and odorless, not only unrecognizable in appearance, but also unable to distinguish from odor. And this dye can cause a variety of malignant diseases and even cause cancer after contact with the skin. It can be said that unqualified home textiles are the most hidden source of poison in family life.
For a long time, including home textiles on the bed, sofa cushions and even curtains, they have not received much attention from consumers during the purchase process. In fact, we should be more vigilant about this type of supplies. In addition to choosing a big brand, we should also pay attention to its quality test certificate to protect the body from chronic poisoning.