Indo Tambangraya Megah (ITMG) generated net profit of US$261.95 million from sales revenue of US$2 billion last year to represent net profit margin of 13%. Golden Energy and Resources (GEAR) Ltd, meanwhile, reported net profit margin of less than 4% last year. Looks like that low calorie coal producers will remain under substantial margin pressures this year. Weak prices have even forced some to report net loss in the fourth quarter of 2018.To subscribe please click here