Realization of the so-called bi-win of environment and economy is the vital way to correctly cope with the relationship between economical development and environment protection, and also the embodiment of sustained development. Incorporating with Jinlong's practice, this paper emphasizes the crucial role of the development and application of green technology, including design, production, management and, in improving environment quality, reasonable utilization of resources, upgrading management and competitiveness, and facilitating sustained development of enterprises.