And here something very interesting:

Besides localizing production, Huawei has stationed hundreds of its engineers at the plants of second-tier domestic suppliers to try to help them improve, in a move to reduce reliance on foreign companies, people familiar with the matter said.

Those suppliers include Jiangsu Changjiang Electronics Technology, the country's top chip packaging and testing service provider, as well as compound semiconductor maker Xiamen Sanan Integrated Circuit.

JCET and Sanan are backed by China's Integrated Circuit Industry Investment Fund, the so-called Big Fund, which Beijing wants to use to boost the country's semiconductor industry, viewed as crucial to national security.

https://asia.nikkei.com/Spotlight/Huawei-crackdown/Huawei-bid-to-move-production-to-China-faces-supplier-resistance