Kemgbe 1947, ISA International Sign Expo na-eme kwa afọ na America na Machị ma ọ bụ Eprel, ebe ndị ọzọ n'etiti Orlando na Las Vegas. Dị ka ihe ngosi kachasị na akara, eserese, mbipụta na ụlọ ọrụ nkwukọrịta anya, ISA Sign Expo na-adọta ọtụtụ ndị ọkachamara n'ụwa kwa afọ. Na ISA Sign Expo, ị ga-ahụ ihe ka ọtụtụ n'ime igwe na-emepụta akara na mbipụta nke ọgbara ọhụrụ.
S&A Teyu Industrial Water Chiller Machine maka Iju UV LED Light Source
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