.www.szbjhkj.com The company promises that all products produced by the company will be guaranteed for three to five years. Under normal conditions of use, quality assurance is based on the correct storage, installation, use and maintenance of the product; product damage caused by improper installation and use, violation of product operating procedures, is not within the scope of this warranty; for the quality warranty period During the warranty period, the company will choose to repair, exchange (parts) or replace with new products to solve the quality problems. After the warranty period, materials and labor will be charged appropriately.