Zhejiang Guangna Industry & Trade Co., Ltd. is subsidiary company of Wangli Group Company. Our brand is produced and sold by Zhejiang Guangna Industry And Trade Company. We have mastered the leading core techniques of anti-theft and anti-burglar, gradually owned more than 100 national patents and 100% proprietary intellectual property rights in anti-theft and anti-burglar. In addition, we have passed national 3C mandatory quality certification and complete quality control system (ISO9001 ...