My mind on 093b has changed quite a bit. I think it will be better than I previously thought. Inner hull being 9m is a little bigger than I thought. My impression of china's precision tooling industry has also improved a lot. The 093s were really noisy. Probably not much quieter than 091Gs and were just better due to being safer and having more power. 093As happened across many years and were probably getting incrementally better. 093B development was done at a time when better precision tooling and more advanced reactor technology became available to China. The complaint was always that they did not have enough space to fit all the sound absorbers you want to fit into a nuclear sub. That's still an issue, but at least the machine room should be a lot quieter now. For example, Victor 3 was said to have gotten a lot quieter in the end of class builds due to improved rafting technology and quieter machines. 093B should have wider pressure hull and be fitted with better rafting technology than what the Soviets had available. China's precision technology should also be leagues better than what was available during Soviet time. You can just look at the build quality of WS-10C and J-20 to see the continual improvement for China's manufacturing industry in this aspect.
Victor 3 was considered to be close in noise level to early Akula class despite being much smaller. If I had to guess it's something like this:
Victor 3 - 8.2 m
093A - 8.6 m
Akula - 11 m
093B - 9.0 m
688 - 10 m
As such, I think it reasons that 093A (the later builds) were at Victor 3 level in noise level, probably around later Sturgeon build. The 093B's noise level is likely to be early to middle LA class and comparable to Akula class that were completed around 1990. While that may not sound so impressive, you should think about the small size of 093B. In terms of overall combat capability, Of course, all of this is just a guess until the boats go in service. I would imagine that PLAN would not mass produce anything worse than LA class.
Which gets us to the industrial side of things. With this huge shipyard available, it makes a lot of sense for them to take the next few years to scale up production and train all the workers needed to produce a lot of nuclear submarines. The work force should be ready to really pump out submarines once they become comfortable with mass producing 095s. Lyman predicted at least 8 093Bs in this batch. That is probably reasonable for both industrial and training purposes.