Is it ok to copy a W5 head and make it better or are we just mad at Speedmaster

China can 100% make good product. It all depends on the factory that you choose and how much you are willing to pay for the product. Better factory better quality = more expensive, poorer factory poorer quality = less expensive. The biggest issue in China a lot of the times is not the factory itself but the quality control they gave which is usually not the best. The Chinese expect a small percentage of the product they produce to be defective, and that to them is acceptable. To us here it is really not acceptable. That is why you have so many US companies buying raw product in China and finishing it here, these companies tend to have the best reputation in the USA.
Chinese companies will produce to the quality standard you demand or allow.