At present, metal materials are more and more widely used in products. In this mixed market, there are a lot of fake materials, which means that the content of ingredients in materials is not qualified, such as brass, copper content is not up to standard, but iron and other metal components exceed the standard.  

The biggest reason is that some materials after adulterated, profits are high, such as with material prices around the world now, manufacturers have more interest to fraud, some manufacturers in order to maintain old customers, while maintaining the price rises, will work on material, doped with other metal components, lead to the unqualified material.  

And, of course, most of the time, the doping does not necessarily will directly cause the functional, we use a lot of brass parts, for example, just conduction, the doped out a bit it would only be resistance, impact on the function of the whole big not big, but more strict in some application areas, such materials will produce a great deal of problems,  So have to cause attention.  

So how we check and control the reliability of the metal material is directly related to the quality of the final product.  

According to our experience, there are the following ways to control the material authenticity and reliability of these metal parts.  

1, such as brass, first use a magnet to suck, see if it can suck up, suck up that there is magnetic, that brass iron content is too high, the material is unqualified, if 304,316 stainless steel, you can also use magnet adsorption, and with stainless steel detection liquid detection material composition  

2. Provide authentic and reliable reports on raw materials  

3. In daily supply chain accumulation, constantly optimize, evaluate suppliers and select those suppliers with stable and reliable materials to ensure the stability of channels  

4. When buying raw materials, try to choose some big, well-known manufacturers or agents to greatly reduce the probability of buying fake materials