Dongguan Da Lang Yuanyuan Wool Printing Factory, etc. According to Baidu map, the environmental protection city is located in Xinmalian Village, Dalang Town, Dongguan City. Printing factories in the city include Dongguan Mingya Wool Textile Co., Ltd., Qianse Printing Factory and Dongguan Da Lang Yuanyuan Wool Textile Factory. Dongguan is a prefecture-level city under the jurisdiction of Guangdong Province, located in the south of China.