Relief measures to help Hong Kong exporters weather the US-China trade war will carry on into next year after Washington upped tariffs on US$200 billion of Chinese exports, with one business leader predicting a drop in trade orders of up to a fifth.Hong Kong’s commerce minister Edward Yau Tang-wah announced the extension of the discounted exporters’ insurance after meeting representatives of the business sector on Friday afternoon.Tensions have escalated of late between the world’s two biggest…