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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
