Through the efforts of all employees in Songjiang, we are pleased to win the first prize of the Municipal Science and technology progress, apply for a number of invention patents, and successfully use the new invention patent technology for production, so that the original Songjiang C-type product warranty period is increased to three years based on one year, and the price is appropriately floated down based on the rise of raw materials, so that customers in Songjiang can enjoy real discounts.