China has produced a 5G smartphone using an advanced silicon chip on a scale of miniaturisation that was thought to be beyond its capabilities due to US-led export restrictions, analysts have said. Huawei’s Mate 60 Pro is powered by a new Kirin 9000s chip that was made in China by the partly state-owned Semiconductor Manufacturing International Corp (SMIC), the analysis firm TechInsights said. Its processor is the first to use SMIC’s most advanced 7 nanometre (nm) technology and suggests the Chinese government is making some headway in attempts to build a domestic chip ecosystem, the research firm said. Since 2019,…