is it reasonable to hypothesize that the bronze technology was introduced into China from West Asia?

Chinese bronze technology came from the west. It looks like Chinese bronze technology largely came from the Andronovo culture, which probably inherited its bronze technology from the Yamnaya culture. The likely source for Yamnaya copper/bronze metallurgy is the Balkans. Thus, eastern Europe is perhaps a more likely original source than western Asia.

• Androvono culture map: https://commons.wikimedia.org/wiki/File:Indo-Iranian_origins.png

• Yamnaya culture map: https://commons.wikimedia.org/wiki/File:%D0%AF%D0%BC%D0%BD%D0%B0%D1%8F_%D0%BA%D1%83%D0%BB%D1%8C%D1%82%D1%83%D1%80%D0%B0.jpg

See also figures 4 and 5 in:

• Amzallag, N. (2009). From Metallurgy to Bronze Age Civilizations: The Synthetic Theory. American Journal of Archaeology, 113(4), 497–519. http://www.jstor.org/stable/20627616

showing the diffusion of bronze-smelting technology.

Western links were clearly pointed out almost 70 years ago by Max Loehr:

• Loehr, Max (1956). Chinese Bronze Age Weapons: the Werner Jannings Collection in the Chinese National Palace Museum, Peking. Ann Arbor, Mich.: University of Michigan Press.

and more recent work has largely confirmed this. For a brief overview of this evolution of ideas, see:

• Potts, Daniel T. (2012). Technological Transfer and Innovation in Ancient Eurasia. In: The Globalization of Knowledge in History. Berlin: Max-Planck-Gesellschaft zur Förderung der Wissenschaften. 10.34663/9783945561232-08 https://www.mprl-series.mpg.de/studies/1/8/index.html

Iron technology also came to China from the west, via the steppe, possibly with the ultimate source being Iran/Central Asia.