How can consumers tell whether Bian Shi is true or false?

It is more appropriate to use the words "shoddy, fake and shoddy, genuine" to describe the current chaotic situation in Bian Shi market. The reporter's investigation found that almost all the low-priced bian stone products on the market and online have problems such as rough production process, unknown composition, fraudulent use or tampering with test reports, and belong to the "three no products" explicitly prohibited by the state. Here, the reporter reminds everyone that wearing or using inferior stone containing harmful radiation or heavy metal substances will not only have no health care effect on the human body, but also have a negative impact on our health. Three tricks of low-quality bian stone speculation: color, origin and standard "Sibin pumice, its true color is mysterious and yellow". This is the description in ancient books of the color of Spencer's pumice, the raw material of Spencer's Stone, and the "mystery" here is interpreted as "black" (Xinhua Dictionary, page 542). The pumice skin in Sibin is grayish yellow, but it is black after polishing and grinding. It will turn black and shine after long-term absorption of human body oil, and it is a black beautiful stone. Because many consumers don't understand the word "Xuan", businesses interpret this word as red or brown to promote their products. Therefore, it is the speculation intention of some vendors to distinguish purchases only by the color of bian stone. The raw material of authentic Bian Shi in Sibin comes from the ancient Sishui River Valley which flows through many provinces. This does not mean that it is not necessarily a Peking duck, but it is definitely not a Bian Shi produced in Surabaya. At present, in order to make huge profits, some businesses are frantically tampering with and speculating on the concept of bian stone origin, regardless of consumers' health. All kinds of stones with unknown quality, rough appearance, different specifications and different colors are born crazily, which leads to the fact that "Surabaya" stone is called bian stone, which is a fallacy that stones can cure diseases. According to the reporter's investigation, there is no unified national standard for bian stone products as medical devices. Some enterprises boldly use the name of national units and frantically guess their own standards for various Bian Shi products. The ultimate goal is profit-driven, so that consumers can save more money. The reporter bought some "Bian Shi" from Taobao at a price of about 30 to 50 yuan each, and entrusted Tsinghua University Testing Center to carry out elemental testing on the bought "Bian Shi". The test results show that, compared with the test report published on the website, the data such as hardness, quality and chemical elements do not conform to the characteristics of the kerbstone advertised by the merchants. There is no infrared thermal image change and rare earth, strontium, titanium, chromium, manganese, zinc and other trace elements beneficial to human body. Some merchants sell red or brown "bian Shi", which contains heavy metals such as lead and other harmful substances. However, such businesses usually evade detection or use the "jewelry appraisal certificate" to steal the concept. After careful investigation, most of the "test reports" they provided were forged, or the test contents did not meet the hygiene requirements at all. The price of genuine bian stone is not low, so don't be greedy for cheap. Bianshi is the general name of stone medical devices in traditional Chinese medicine. Bianshi made of pumice is the top grade of Bianshi products. The bian stone in the market is mixed, ranging from tens of pieces cheaper to hundreds of thousands more expensive. Due to the high cost of raw materials for genuine Bian Shi, the products have to go through testing, transportation, processing and sales before they go on the market, and the cost is usually not less than 100 yuan, so there is not much room for discount. On the other hand, many fake "bian Shi" raw materials are extremely low in cost, and industrial building stones are used as inferior materials, even the detection link is omitted, so they can be easily sold at a low price of 54% discount. Consumers should keep in mind the principle of "you get what you pay for" when purchasing Bian Shi products, and pay special attention to Bian Shi products with low prices or large discounts. Look at the authentic Bian Shi three certificates: drug supervision, quality supervision, filing and test report. Bian Shi refers to a stone that can cure diseases. It can only be called Bian Shi if it is tested by the authoritative department of the state. Consumers must pay attention to distinguish the authenticity when buying kerbstone products. In the absence of appraisal experience, they should recognize the three certificates presented by the merchants: the medical device registration certificate filed by the Food and Drug Administration, the product quality standard filed by the Quality Supervision Bureau, the ingredients issued by the national authoritative department and the far infrared detection report. For small vendors to forge test reports, the certificates (mostly copies) issued, such as "certificates" issued by individuals or jewelry appraisal institutions, must not be easily believed, because the test components are unclear. Choosing Bian Shi requires rationality: don't be greedy for petty gain, don't listen to deception, and check the three certificates. Our reporter reminds consumers that there is no distinction between true and false in Bian Shi, and all the stones used in Bian Shi can be called "Bian Shi". It is precisely because of this misleading statement that the curb market is mixed. Muyu stone, Lingbi stone, reddish brown and yellow stone are all euphemistically called "bian stone", but the safety and functionality of "bian stone" are deliberately ignored. Although among many kerbstone materials, Spence pumice is undoubtedly the best material. But as far as the pumice in Sibin is concerned, there is indeed a problem of authenticity. At present, shoddy and genuine "bian Shi" tends to flood in the market, especially the low-priced three-no products sold by some vendors, which is a big hidden danger to human health! Consumers should not be greedy when buying bian Shi, buy bian Shi produced by regular manufacturers with legal qualifications, choose credible purchase channels, recognize the certificates of national authorities, and require merchants to honor the three-guarantee commitment of products.