Do you have in mind some industry where the best, most modern machines are of Chinese origin?
I would not say they quite dominate in any category just yet, but China has highly cost-competitive offerings in sintering ovens, 3D printers and ancillary tools in additive manufacturing. It is also a leading manufacturer of the powders themselves. Thanks to its Ti deposits, Australia leads in cold spray, especially high pressure models, but medium pressure units out of China are now penetrating the pipeline repair market (crack repair with no downtime, due to the "cold" spray (<300ºC)).
The importance of 3D laser printing lies in its so-far unique capability to produce
hitherto unobtainable alloys (paywall, sorry, but abstract is legible) via rapid heating and cooling using metals that otherwise would separate out into intermetallics during the long cooling process in a traditional vat, with gravity also playing a role. Cold spray is rumored to allow that as well, with one research group claiming to have successfully created a high entropy alloy (most likely mostly an intermetallic, peppered with "true" HEA molecules, which is still pretty good).
Additive manufacturing is expensive, mostly due to the high cost of the powders themselves, but also the high initial capital costs and, in the case of 3d printing, low scalability. Its investment boom is well over, but the industry is now in the "solid proposition" phase following the early hype. Sintering, in particular, has really taken off, though, mostly in the automotive industry, as in the case of my neighbor down the highway, AMES Sintering. The CEO of that company is
such a cool dude (answers company inquiries himself, and gives helpful hints to boot). Billion dollar company now.