欧美大片ppt免费,日韩成人无码影院,毛耸耸亚洲熟妇性xxxx交潮喷,青青青青久久精品国产

GRINM GROUP (formerly known as China General Research Institute for Nonferrous Metals), founded in 1952, is a large R&D organization and high-tech incubator with strong core competence in nonferrous metals industry in China. Focusing on three core business segments, advanced nonferrous metal materials and processing, mineral processing and metallurgy, analysis and testing, we have more than 40 corporate family members, including platform innovation companies, high-tech companies, investment companies, publishing and services companies, and have established R&D and production bases throughout China in Beijing, Hebei, Shandong, Shanghai, Anhui, Sichuan, Chongqing, Fujian as well as in UK and Canada. .