Since the "war" in Gaza began, China hasn't "banned" any investment to Israel. Like the soft-ban on American rare earth metal exports, there's no "ban" at all. What happens is the proper forms to get the investment pushed through get "lost" or "delayed." Certain inconsistencies are pointed out. Replies from the proper authorities take months, etc etc. It's a plausible deniability ban.

[–] thethirdgracchi@hexbear.net 24 points 1 day ago

For context on this:

"In recent weeks, companies in the hi-tech sector have complained about delays in shipments from China of dual-use components. In all the checks we conducted with official bodies, it appears that there is no change in regulations, but rather enforcement that was not practiced in the past. Such technical requests create bureaucratic hurdles," a government official told Ynet.

"The Chinese are imposing a kind of sanction on us. They don't officially declare it, but they are delaying shipments to Israel," a senior figure in one of the factories told Ynet. "They have various excuses and pretexts, such as requiring suppliers from China to obtain export licenses to Israel that did not exist before. Additionally, they demand that we fill out numerous forms, causing significant delays. This has never happened to us before. We are talking about many different types of components. In electronic products, there are tens of thousands of components, but if even one component doesn't arrive, we cannot deliver the product."

Note the date, this article is from 2023, so these kinds of soft bans have been ongoing for years. Per https://www.ynetnews.com/business/article/b1ze7rrda