Environmental technology(abbreviated as envirotech) or green technology (abbreviated as greentech) or clean technology (abbreviated as cleantech) is the application of the environmental science to conserve the natural environment and resources, and to curb the negative impacts of human involvement. Sustainable development is the core of environmental technologies.  (Wikipedia, Environmental /Green Engineering, 3/16/2011)

Applications     
Calcium Phosphate Pigments     
Recycling  
Sustainable Technology   

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