Trade rules now count carbon, packaging and product design across the supply chain, not just the exporter. The article's EU steel example: at about EUR 75 per tonne carbon cost, a shipment gains roughly THB 9,000 per tonne in cost, while a lower-carbon producer stays more competitive. Bangkok is piloting charges for households that do not sort waste, and a circular economy draft law is in preparation. Suppliers to exporters should expect questions about emissions and packaging data. Start by checking what your customers will ask for.