Thanks for sharing the SNPW tweet. Shenzhen was put on the map as related to technology by companies that originally set up operations in Hong Kong - is a quick train and or ferry ride to Shenzhen. Check out what's happening in Hong Long which many goods flow through down south. From what I have heard Shenzhen is experiencing significant delays. Read this: https://www.bloomberg.com/news/articles/2022-03-24/china-port-jams-at-five-month-high-pose-risk-to-u-s-deliveries
Shenzhen has developed into a prominent technology base but the cost base is much higher than compared to other regions - primarily in the north.
Why the above is important to note is that many of the suppliers, especially raw material, component suppliers etc are in the north where pricing is much more competitive. Even though Shenzhen is down south, I would be very, very surprised if many of their suppliers aren't located up north. Think of it this way, how many component/raw material, sub assemblies etc are produced in silicon valley and sold in silicon valley - almost none. Point being, many of the companies are impacted by supply chain based on the location of the supply chain, not the location of the end customer.
Again, part of my life has been spent in China (PRC) including Shanghai, Shenzhen and early on Hong Kong - Kowloon. I understand it very well. All the best.
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