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U-Qixuan ubambe iqhaza ku-2023 (4th) Surfactant Industry Training Course
Phakathi nokuqeqeshwa kwezinsuku ezintathu, ochwepheshe bezikhungo zocwaningo lwesayensi, amanyuvesi namabhizinisi banikeza izinkulumo endaweni, bafundisa konke ababengakwenza, futhi baphendula ngesineke imibuzo eyayibuzwa abaqeqeshwayo.Abaqeqeshwayo ba...Funda kabanzi
