China is so industrially advanced that it is recognised as the factory of the entire world.

Most companies from wealthy countries like Singapore, Hong Kong, U.S.A, Germany, Japan, and South Korea, have outsourced to China the manufacturing of their products from garments, home appliances to high-end smart phones and vehicles. 

These countries have relocated their manufacturing processes to China to take advantage of its skilled workforce and efficient supply chains. 

They are not in China to exploit cheap labour, as it has historically been suggested.