A halin yanzu, many daily necessities are made of materials such as copper, baƙin ƙarfe, stainless steel, da dai sauransu. Waɗannan kayan sun ƙunshi abubuwa masu nauyi na ƙarfe, which may cause excessive standards if not handled properly.

Misali, the main element of stainless steel contains manganese, chromium, da nickel. To maintain corrosion resistance, bakin karfe dole ne ya ƙunshi takamaiman adadin chromium. 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, aluminum, da jagoranci. Idan babu gubar, yana da wuya a samar yayin yin simintin. Mafi girman abun ciki na gubar, the easier the casting process is. Saboda haka, 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.

Wani dalili kuma shi ne cewa fasaha da kayan aikin kamfanin sun tsufa, resulting in the control of trace elements. Yawancin lokaci, lokacin da aka fara sanya sabbin kayan aiki a samarwa, samfuran sa sun cancanta, amma lokacin da ake amfani da kayan aiki na dogon lokaci, 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. Duk da haka, 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. Wannan saboda wasu masana'antun ba sa siyan ma'auni na tagulla don sarrafa farashi, 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.

Yadda za a bambanta ƙananan famfo daga farashin? 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.

“Idan aka kwatanta da manyan kayayyaki, tens of dollars of faucets are really not worth spending so much time and energy to pick one by one, kuma ba zai kula da matsalar yawan gubar dalma ba.” A Shanghai resident who is renovating at home told reporters.

Dangane da haka, 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.