EXHIBIT 4.12 WARRANT SIDE LETTER BAYTREE INVESTMENTS (MAURITIUS) PTE LTD. December 20, 2006 To: Yingli Green Energy Holding Company Limited Mr. Liansheng Miao Yingli Power Holding Company Ltd. Address: No. 3055 Middle Fuxing Road Baoding, People's...Warrant Side Letter • May 11th, 2007 • Yingli Green Energy Holding Co LTD • New York
