Hole Shoes, The Same Style Price Can Be 32 Times Worse.

Shanzhai "hole" shoes It may cause harm to the human body.

It is reported that with the same "hole shoes", sometimes the price can be several times different, the so-called difference is in the "hole shoes" raw materials. Relevant experts say that some inferior "hole shoes", though not very outdated, are really harmful to the human body. If manufacturers want to cut costs, they will use plastic instead of the EVA materials that should be used, or even recycled plastic from recycled plastics. In addition, formaldehyde and other chemical raw materials will be added to the process.

Recently, the Xinhua news agency quoted the German media reported that a German survey showed that many plastic "cave shoes" found carcinogenic polycyclic aromatic hydrocarbons, through the skin into the human body. In addition, some plastic shoes also detect heavy metals such as chromium, cadmium and lead. Then, in China, does "Dong Dong shoes" have the same problem?

　 The same price can be 32 times worse.

The reporter came to Nanjing West Road yesterday. Crocs "Brand stores, you can smell a similar smell of rubber in the store, the walls are covered with a variety of different styles of" cave shoes ", at this time, several consumers are trying on. Random look at the label of the shoe. It is indicated above that the main component of the shoe is ethylene vinyl acetate copolymer (EVA), which is produced in Guangdong. The price is mostly around four hundred yuan. "These shoes are made of resin. Things are definitely different. There's a big difference in materials before they're done." A salesperson said.

In order to further understand the material and supervision process of the brand, the reporter contacted the brand public relations department later, but until the deadline, no reply was received.

Reporters then searched for key words "cave shoes" on Taobao, showing up to more than 37 pieces of goods. At the same time, the price difference also appears here. A new shoe priced at 469 yuan in the exclusive store is priced at 65 yuan in an online shop with orange / blue color. The price is only 1/7 of the former. Another pair of Tibetan Blue / red matching shoes with a price tag of 399 yuan is only 12 yuan online, and the difference between them is 32 times. "The shoes are also made of resin, and there is no difference in wearing feeling." A shop owner introduced. However, when the reporter asked whether the material would be harmful to the human body, the store only said, "wearing a foot is absolutely fine."

Mr. Gao had bought a pair of "cave shoes" at a price of 19 yuan. He recalled that after buying shoes, there was only one rough printed "certificate", but he could not find any manufacturer's name. And when he approached his shoes with his nose, he could smell a pungent taste. "After a month, the taste is still very strong, and then I will no longer wear it." {page_break}

　　 Anti carcinogens should also be protected against formaldehyde.

In fact, many cheap "hole shoes" on the market are not only cottage products, but also exist in materials. "Driven by interest, inferior recycled plastics are used instead of resin materials. It's not surprising that it tastes heavy. " An insider told reporters.

Professor Yu Shanhui of the Department of organic chemistry, East China University of Science and Technology, told reporters that as the polymer copolymer has good chemical stability, ethylene vinyl acetate copolymer is non-toxic, so it is a safer material for human body, especially the products produced by regular manufacturers, should be at ease of use. But those cheap "hole shoes", manufacturers to reduce costs, will use plastic instead of the original EVA material should be used, or even recycled plastic from low-grade plastic to make recycled plastic, in the process will also add formaldehyde and other chemical raw materials. The hole shoe made of these materials will produce pungent odour, and the specific formaldehyde content will also be different because of the different craft of the manufacturer.

However, Professor Yu said polycyclic aromatic hydrocarbons, though carcinogenic, are not easy to enter the human body through the skin after direct contact with their feet. Users should be more careful about formaldehyde. "Most of the chemical poisoning is absorbed by the lungs, but once the inferior plastic shoes are decomposed, such as the continuous high temperature during this period of time, the shoes will be released at different temperatures after being exposed to high temperatures for a long time, and will be absorbed by the body in the form of gas.

As for what the media said before, by wearing socks to prevent harmful chemicals, Professor Yu admitted that to a certain extent it could be better, but a better way is to wear less or not wear those inferior hole shoes as little as possible.

　 　 National standard Has been formulated and is about to be implemented.

Compared with other kinds of shoes, "cave shoes" can only be regarded as "new students". Is there a standard for this kind of shoes?

Reporters call the national footwear Standardization Committee, the staff said, "cave shoes" should be plastic shoes on the basis of reference. Accordingly, the reporter found on the website of the National Standardization Management Committee that there is no specific national standard for plastic shoes at present, but only the entry exit inspection and quarantine industry standard.

In the third part of footwear inspection code: SN/T 1309.2-2010, there are certain requirements not only for the physical properties and appearance quality of footwear, but also for inspection of toxic and harmful chemicals in the inspection items. However, this standard applies only to plastic shoes imported and exported, not domestic plastic shoes sold domestically.

A related person said that at present, most of the footwear standards used for daily wear in China are recommended by chemical or light industries, which only require physical and mechanical properties, but do not require strict limits on harmful substances. It is understood that the new national standard "limited substances in footwear and footwear components" (GB/T 29292-2012) has been released at the end of last year. Among them, the items for controlling harmful substances in footwear should be controlled as follows: Ph value, free formaldehyde, decomposable aromatic amine dyes, extractable heavy metals, color fastness to rubbing of shoe and inner bottom, etc.

However, the newly formulated national standard will be formally implemented in September 1st this year. Therefore, the standard of harmful substances content in "cave shoes" is still a blank.