We assume our target users are youngsters as they will be the backbone of Hong Kong in the future and it is a long term scheme to promote environmental protection. Besides this, pursuing electronic products is among the young nowadays so using internet services are easy for us to communicate with them. On the other hand, we would find Greenpower to be our target user for promoting to the other citizens because it is a most famous environmental organization in Hong Kong and their staff would help us to expend the promotion so they could enhance our work efficiency.