1, Through the ISO 9001:2008 and CE 2. Can be used long time 3.Nice appearance, not easy oxidized or faded. 4.Good price Compamy Profile:Beijing Xinao Hengan Electromechanical Equipment Co., Ltd established in 1999 and has the self-management import and export right, already through ISO quality authentication.. We mainly devoted ourself to designing, developing, producing and selling all kinds of ...