At the moment, the buying and selling market is mixed. Selling things is getting smarter, and you can't fall behind in buying things! Today, Xiaobian will introduce some questions for everyone to pay attention to when buying gold ornaments. For friends who are new to the goldsmith market, it will definitely help! At the very least, you can also make a reference. Let's learn together next. How to identify gold jewelry? What should you pay attention to when buying gold jewelry? For investors, there are two advantages to understanding the detection method of gold. First, you can choose the appropriate testing methods and means according to your own needs. Second, you can understand the shortcomings of various testing methods and avoid being blinded by people. The most common non-destructive test method uses the water hanging method, which is to apply the Archimedes' law to test the density of the gold product and compare it with the standard value. The advantage of the water hanging method is that it is simple to detect and does not cause damage to the gold product. However, the water hanging method has many limitations when it is used. This method mainly uses density as the basis for detection, but if the product is doped with a metal with a density close to gold, this method cannot be distinguished. Another point is that the water hanging method can not detect hollow products, especially in gold jewelry, the hollow technology is widely used, and the water hanging method is not suitable for the detection of such products. The most common destructive test is the fusion method. Under high temperature technology, the gold product is melted into a liquid and then tested. This method is more reliable than the water hanging method, but its destructiveness is an investor's approval when testing. This method is used in the repurchase centers of some banks and in the redemption of jewelry processing shops. When buying gold products, you must first choose a reputable brand enterprise. Never choose a brandless vendor for cheaper. Because the price of gold is relatively transparent, if you encounter a situation that is obviously lower than the market price, you should be more guarded. Secondly, When buying gold products, remember to invoice, which is the key to protect consumer rights; third, if there is any doubt, it can be detected in time, the gold jewelry inspection agencies under the State Technical Supervision Department are distributed in major cities, testing gold jewelry The composition is relatively easy; fourth, choose to invest in gold bars, gold nuggets and other gold products, to choose the formal business that promises to buy back, the quality can also be guaranteed. The above questions about buying gold ornaments need to pay attention to two aspects. One is how to identify the problem of gold ornaments, and the other is some problems that should be paid attention to when buying. Although the introduction is not very detailed, these problems are the problems that everyone must face when purchasing gold ornaments. hope it is of help to you. Eva Sport Insoles,Running Shoes Insert,Sport Soft Pad Running,Eva Foam Insoles Henan Bangni Biotechnology Co.,LTD , https://www.insolesbangni.com