Since this year, Yingli group take stabilize and improve product quality, realize breed variety benefit maximization as the target, and overcame the all kinds of shortage, the organization of production difficulties, constantly optimize the organization of production, and timely and reasonable adjustments logistics, realized production stability along the line; established the whole process from the raw fuel acceptance to finished products manufactured, all elements of the quality management system; with the form of project responsibility, integration of the technical strength of the company-wide, actively promote the key quality problems and quality improvement efforts, and to enhance the quality of the flanges and other key products.