Also, it has been playing more amd more important part in the production of coatings, surfactants, hinders, lubricants, plastics, composite solid propellents for rocket and heat-insulating cohesive materials for engines.
英
美
- 在涂料、面活性剂、结剂、滑剂、料及复合固体火箭燃料和发动机绝热粘结材料的生产中,显示出愈来愈重要的地位。