China produces many products at the lowest cost possible, even though Chinese consumers do not desire many of these products (e. g., football helmets). China is achieving:

Production efficiency only

Explanation:

The concept of production efficiency describes how this technique allows enterprises to elaborate goods and services at a really low cost. This is possible because production uses the cheapest combination of inputs. In China's case, all the mentioned products may not be necessary for the costumers, so the country is only achieving effectivity in its production.