News reports say the 21st century Chinese engineers should from the simple material wealth creators pursuit of rich to promote sustainable development practitioners. The future of engineering technology should go green manufacturing, engineering technology development path from the 20th century to pursue simple mode of scale, efficiency turn reduce, reuse, recycle and direction.
Since the reform and opening up, China's yuan GDP energy consumption greatly decreased, but in engineering technology progress, and the developed countries are still gap, energy efficiency under the world advanced level, industrial water reuse 10% below the world advanced level, mineral resources total recovery 25% lower than the world advanced level of 20%.

In pursuit of engineering construction, reduce resource usage 4R "and waste recycling waste, emissions, the implementation of material recycling system, repair or reconstruction, its ultimate goal waste equipment is less as possible the resource to meet the needs of economic and social development, through the saving, and recycling waste resources, make full use of the value has been developed and used to generate new economic and social benefits.

"Engineering technology '4R' direction is the inevitable choice of circular economy development and industrial ecology is the solution." resources - environment - development "the contradiction in the park. The ideal mode in the internal resources, establish the symbiotic industry cycle of industrial ecology, coexist, without waste production.