For years, Chinese manufacturers have viewed Southeast Asia as a way to reduce exposure to higher US duties on goods made in China. But a new round of tariff cuts proposed by Washington and Beijing could weaken that incentive for some products, potentially changing the economics of the strategy. Under the new US-China Board of Trade, more than 90 per cent of Chinese products on a list of goods worth US$30 billion – mostly everyday consumer items, such as toys and household goods – would return...