1. The production of high grade ferrite permanent magnet device (Beijing General Research Institute of Metallurgy) 2. Beijing Jinlong Science and Trade Comprehensive Building (A,B) (Beijing General Research Institute ...1. The production of high grade ferrite permanent magnet device (Beijing General Research Institute of Metallurgy) 2. Beijing Jinlong Science and Trade Comprehensive Building (A,B) (Beijing General Research Institute of Nonferrous Metals)展开更多
文摘1. The production of high grade ferrite permanent magnet device (Beijing General Research Institute of Metallurgy) 2. Beijing Jinlong Science and Trade Comprehensive Building (A,B) (Beijing General Research Institute of Nonferrous Metals)
