(Reuters) -Thousands of South Korean truckers were on strike for the seventh day on Monday, protesting over pay as fuel costs surge, disrupting production, slowing port operations and posing new risks to a strained global supply chain. South Korean industries, including auto, steel, petrochemical and cement, faced accumulated losses worth about 1.6 trillion won ($1.2 billion) as of Sunday due to the ongoing trucker strike, the industry ministry said. Following are details of the disruption, lost production and reactions from union officials and businesses. AUTOS The trucker strike had cost the…