A few days ago, a certain inspection and Quarantine Bureau found that the copper power line contained aluminum component, that is, copper clad aluminum wire, which would increase conductor resistance and calorific value, reduce the power line's cut-off capacity. At the same time, the aluminum wire did not meet the bending capacity of product safety standard, and the electrochemical potential difference between copper and aluminum was large, and it should not be directly contacted.

The reason why enterprises are replacing copper with aluminum in their products is mainly the recent rise in copper prices and the increase in the cost of enterprises, especially those that are accepted at lower prices of raw materials. Some enterprises are driven by interests, ignoring product quality.

The inspection and quarantine department suggests that the relevant enterprises should take into account the price fluctuation factors of raw materials when accepting long-term orders, and should do their best when accepting orders. Enterprises should set up brand awareness, attach great importance to product quality, enhance their brand value, not only care about current interests, ignore product quality and safety, and affect the long-term development of enterprises.