Sany Heavy Industry, the flagship construction equipment manufacturer controlled by Chinese billionaire Liang Wengen, said Saturday net profit in the first six months of the year plunged 48% to 1.4 billion yuan, or $223 million, amid slower growth in GDP and investment spending in the world’s second-largest economy. Revenue during the period shrank 10.7% to 19.7 billion yuan, or $3.2 billion. Shares in Shanghai-traded Sany, ...