Zheng Mu Tang. A search of Hengshui Zhengmutang Glasses Technology Co., Ltd. shows that the company has applied for a registered trademark: "Zhengmutang" patent. Hengshui Zhengmutang Glasses Technology Co., Ltd., with legal representative Wu Xiaoli, was established on March 11, 2020. Address: No. 5, Floor 1, Building 1, No. 221 Zhongxin Street, Taocheng District, Hengshui City, Hebei Province.