China's producer deflation deepened to its worst level in almost two years in June as the economy grappled with uncertainty over a global trade war and subdued demand at home, piling pressure on policymakers to roll out more support measures.

Rare earths at a factory in Tianjin, China. Manufacturers speak of resilience yet some keep only a week’s supply of rare earth magnets in their inventories © Doug Kanter/Bloomberg China’s weaponisatio