Shanghai Chee echiche: Otu esi enweta mgbakọ na mwepụ LED zuru oke, physics, ngwakọta ọkụ?
[ederede / Engineering LED Yue Motte], Jenesis, o dere, n'ụbọchị mbụ, Chineke kwuru, sị, Ka ìhè dị na ìhè dị. naanị na ntọala nke ihe niile dị. Site na ọkụ eke na ọkụ, ka t
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