Guangzhou Tianhe District GuangdongNo.4 CommoditiesNo.5 Smelting TechnologyNo.7 Nonferrous MetalsNo.8 Precious MetalsNo.11 Zi Ran Zi YuanNo.18 Shen ProcessingNo.29 Yi Dai Yi RoadNo.29 Metal Materials Metal Mines Ye Gold Engineering Lv He Jin Xing Materials Ye Gold Technology专精特新小巨人企业专精特新企业实用新型专利发明专利双百企业外观设计专利