Op it stuit, many daily necessities are made of materials such as copper, izer, rustfrij stiel, ensfh. Dizze materialen befetsje swiere metalen eleminten, which may cause excessive standards if not handled properly.
Bygelyks, the main element of stainless steel contains manganese, chromium, en nikkel. To maintain corrosion resistance, roestfrij stiel moat in bepaalde hoemannichte chromium befetsje. If the chromium is not handled properly, it may lead to excessive chromium. Similarly, improper handling of manganese may result in excessive manganese.
The copper alloy used to make the faucet contains trace amounts of metal elements such as iron, aluminium, en lead. As der gjin lead, it is dreech om te foarmjen by it casten. Hoe heger de lead ynhâld, the easier the casting process is. Dêrom, the copper faucet on the market generally contains a certain amount of lead. If the lead-free process is not done well when the factory is manufactured, it will lead to excessive lead.
In oare reden is dat de technology en apparatuer fan it bedriuw ferâldere wurde, resulting in the control of trace elements. Gewoanwei, as de nije apparatuer foar it earst yn produksje set wurdt, har produkten binne kwalifisearre, mar as de apparatuer wurdt brûkt foar in lange tiid, the trace elements of the product will exceed the standard. This situation cannot be repaired from a technical point of view, and only new equipment can be replaced. lykwols, some factories continue to use it in order to save money. This is a technical problem and a cost issue.
A bathroom equipment seller told reporters that most of the faucets on the market today are copper cores, but the quality is not good. Small manufacturers, cheap faucets, the possibility of lead exceeding the standard is very large. Dit komt om't guon fabrikanten gjin standert koperlegeringen keapje om kosten te kontrolearjen, but purchase cheap lead brass from small workshops as raw materials. This lead brass is often high in lead but at half the price of brass alloy.
Hoe te ûnderskieden inferior kranen út de priis? Some insiders told reporters that a copper faucet with a formal process should cost more than 100 yuan, while tens of faucets are likely to use lead brass.
“Yn ferliking mei grutte produkten, tens of dollars of faucets are really not worth spending so much time and energy to pick one by one, en sil net betelje omtinken oan it probleem fan oermjittige lead ynhâld.” A Shanghai resident who is renovating at home told reporters.
Yn dit ferbân, some insiders said that domestic consumers pay insufficient attention to the quality and safety of faucets, which also makes many unqualified inferior faucets have opportunities.

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