The new Surface Pro(2017) accounts for 9.2%, roughly the total of the Surface Book(7.5%) and the Surface Laptop (2.0%). Mr Draghi said the positive news about eurozone growth meant that the bank's council was "increasingly confident" that inflation would strengthen over the long term and become "self-sustaining". But he added that the current policy needed to be maintained to "maintain inflation", reaching the ECB's target of close to 2 percentage points. The withdrawal of shares shall include the two kinds of compensation for recovery and compensation. Free withdrawal refers to the return of shares that have been allocated for free. For example, shareholders voluntarily pay back their allocated shares voluntarily. "Buy" or "buy back" means a limited company shall buy back its shares from its shareholders at a certain price. The company's reduced corporate capital could affect the price of its shares in the market. Therefore, article 143 of the company law stipulates that the company shall not acquire shares in the company. However, the following situations are excluded: (1) reducing the company's registered capital; (2) merger with other companies holding shares of the company; (3) reward the employees of the company; (4) shareholders who have objected to the merger and separation of the company made by the shareholders' general meeting require the company to acquire its shares. Company for reduce the company's registered capital, and hold the company shares of other companies mergers and shares will be awarded to the company worker of acquisition, the company's share capital shall be subject to the resolution of the shareholders' general meeting. After acquiring the shares of the company, the company shall cancel the registered capital of the company within 10 days from the date of the acquisition; Belong to a merger with hold shares in other companies the company and the shareholders for the company merger, division of resolutions of the shareholders' general meeting to dissent, requiring companies to buy the shares, shall transfer or cancellation within 6 months. The company shall not exceed 5% of the total amount of the shares issued by the company for the company's purchase of the shares of the company by awarding the shares to its employees; As regards the financing source of the acquisition, the expenses shall be paid from the after-tax profits of the company; The shares acquired by the company shall be transferred to the staff within one year. Then the interest rate theory of the loan is the interest rate theory of neoclassical school, which is proposed to correct Keynes's theory of "liquidity preference". In some ways, the theory of interest rate can be regarded as a synthesis of classical interest rate theory and Keynesian theory.