3. the use of renewable energy, especially energy from nature, such as solar energy, wind power, water power, and so on.4. use tools and accessories, such as high-efficiency appliances, skinny tube 5 extension, power, etc.5. fuel efficiency, such as structural changes to make the fuel, energy and more.6. recycled turnover by taking the faulty material, brought a new repair. To reduce unnecessary waste disposal or return to new production turnover (Recycle)
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