第十七条 自公布之日起施行，由威廉希尔新区管委会负责解释和修订。Article Eleven: The joint conference system promoting the headquarters economic development in Xixian New Area should be established to plan and coordinate the relevant implementation details of the plan as a whole, and timely research and solve the relevant problems in the policy implementation.Article Twelve: The special funds of the headquarters economic development in Xixian New Area should be established,which includes the incentives and support policy that related to finance and tax contribution, and each Administrative Committee of the New Area should abide by the rules.Article Thirteen: Office occupancy that enjoys the purchase subsidy shall not be sold, rented or put to other uses within 10 years of purchase; The senior management and technical personnel who enjoy the purchase subsidy shall not be allowed to sell their residence during their terms of office. Enterprises and individuals shall provide the relevant undertakings to the Administrative Committee before enjoying the relevant policies. Whoever violates the provisions shall be ordered to refund all subsidies that have been obtained, and to pay the interest as the nominal rate of time deposit of Peopleit est as the no at the time.Article Fourteen The self-used building area of the headquarters enterprise that enjoys the preferential policy to build the office building, in principle, should be no less than 70% of total building area. The large headquarters enterprise with strong industrial promotion capacity, can use partial building area to attract the supporting enterprise of industrial chain outside of the city to settle down, but the self-used building area should be no less than 60% of total building area.The self-used building area of headquarter building constructed according to this preferential policy shall not be transferred to others in 10 years since the date of final acceptance check.Article Fifteen: The accredited headquarters enterprise that involves in the change of name, change of registered capital,merger, division, dissolution and liquidation and such major matters, should timely report to Administrative Committee.The accredited headquarters enterprises that applied rewards shall undertake to operate in the New Area for a period of not less than 10 years, and shall not reduce its registered capital within 10 years. Any enterprise that breaks the promise shall be ordered to refund all subsidies it has obtained, and pay the interest as the nominal rate of time deposit of People’s Bank of China at the time.Article Sixteen: If the accredited headquarters enterprise by Administrative Committee can enjoy other preferential policies,the incentives can be distributed as the highest standard only for once. The total amount of one enterprise that enjoys financial reward, tax subsidy, housing subsidy, talent reward and such support funds shall be limited by 80%, 60% and 30% of the locally retained tax revenue paid by the enterprise in the first three years, the sharing proportion of rewards shall be specified in other document by Administrative Committee, which shall be no more than 50 million Yuan.Article Seventeen: The policy is implemented since the day of publishing, which shall be explained and revised by XiXian New Area Administrative Committee.