With the sound quality management system,the factory passed the quality system attestation of ISO9001:2000 in 2001,and passed the Check and Acceptance for Grade Two Measure of Henan Province in 2002.Depending on the reliable quality and steady performance,our products are well sold to more than twenty cities,provinces and municipalities in China,also exported to America, Japan, Germany, South Korea, Singapore, Hong Kong, etc.,and well received by domestic and overseas clients.