Over the years, Zheng Meijituan companies rely on scientific and technological advances, the content and the combination of outreach, from small to large and from weak to strong, developed their own unique model of development.

• 多年来，郑煤集团公司依靠科技进步，坚持内涵与外延相结合，由小到大，由弱到强，形成了自己独特的发展模式。