Ключевые слова: adult, alternative energy, boiler, chemical, climate change, combustion, control, conversion, conveyance, conveyor belt, ecofriendly, ecological, efficiency, engineer, engineering, environment, environmental conservation, equipment, expertise, factory, garbage, green energy, industry, infrastructure, innovation, long exposure, machinery, males, management, occupation, people, plant, pollution, power plant, recycling, renewable energy, separation, social issues, solid, sorting, speed, sustainability, teamwork, technology, thailand, transportation, warehouse, waste, working,