July 29 afternoon, Wu Ling,the Secretary-General of China Solid State Lighting Alliance and Kwame Amporfo Twumasi,the Deputy Minister of Department of Energy Ghana , signed the cooperation memorandum of understandingin in the area of off-grid energy-efficient lighting in the Institute of Semiconductors,CAS
Clement Gwalania Abavana,Ghana Department of Energy technology consultant , Li Jinmin, director of the institute by the witness as the two sides also signed the memorandum.
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