Huawei's latest high-end phone features more Chinese suppliers, including a new flash memory storage chip and an improved chip processor, a teardown analysis showed, pointing to the progress China is making towards technology self-sufficiency.

Huawei Technologies and a secretive chipmaking partner in China have filed patents for a low-tech but potentially effective way to make advanced semiconductors, raising the prospect that China could improve chip production techniques despite US efforts to halt its progress.

The fight for dominance in the semiconductor sector is reshaping the global economy.

China's top anti-corruption watchdog has launched investigations against several executives linked to the country's largest chip investment fund, as Beijing steps up scrutiny of the sector in its race for technological self-sufficiency.

The chief executive of JSR, one of the world's largest suppliers of a material critical for semiconductor production, has said a lack of industry infrastructure will make it "very difficult" for China to develop cutting-edge chipmaking technology despite a push for self-sufficiency.