Huang Ming solar re-exposed: universal lead exceeded

Regardless of the purpose, the “Hidden-by-Heavy Metal Precipitation Rule” commonly found in solar water heaters disclosed by the Huangming Group in the eighth “exposure of the submarine” has caused consumers to be shocked. The report pointed out that the main culprit leading to solar water heaters exceeding the lead is unqualified copper fittings.

According to Zhang Lifeng, Minister of Technology of Huangming, the solar water heater is composed of two parts: the main engine and the pipeline accessories. When it is delivered from the factory, it is only a semi-finished product. The finished products that are turned into consumers need to be completed by the first-line dealers. Driven by interests, many dealers choose low-cost accessories. "Compared with the low-cost parts of the market, the original solar water heater accessories cost between 200-500 yuan per unit. For many small manufacturers, this part of the cost means that the overall increase in production costs, increase sales difficulty, but also The dealer’s financial roads have been cut off and they have been boycotted.”

According to Zhang Zhengjie, a member of the China Environmental Society’s Heavy Metal Pollution Control Committee, this type of assembled solar water heater not only has many problems in the pipeline leakage at the later stage, but also many copper pieces are made from the reclaimed copper slag. Lead will multiply in hot water and it is very easy to lead to excessive levels of lead in water. "The main ways in which lead enters the body are the digestive tract, respiratory tract and skin. If the skin is exposed to organic lead for a long time, it will give lead into the body to create opportunities." Zhang Zhengjie introduced.