Secondly, the sales of the cable industry have some credit, but the raw material copper for cable production belongs to non-ferrous metals, and the copper price is based on the international copper price futures. So the copper purchased is in stock. In this way, no cable TV company can have such a large capital scale.

In addition, credit is inherently risky. Therefore, cable factories generally don't give credit to customers they don't know in other places. Do not have the advantage of competing with local enterprises.