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10% of all the existing roof area in Hong Kong is built with an extensive green roof within 5 years
Under the Government Subsidy Incentive Scheme
Maxmium percentage of Total Tax Burden in the total government expenditure is 0.13%
The payback period of all sectors is within 3 years
IF
Cutting down 1311.24 tonnes of carbon emisson per year
2,676,000 m2 of green roof will be established
Conclusion
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