The mmepụta usoro nke gbanwetụrụ plastic ahụ tumadi gụnyere: Ịgwakọta usoro, extrusion usoro, nkwakọ. Ngwakọta. 1. Nnwale isii nke ịgwakọta: ịgba ụgwọ, ịnata, ihicha, nkewa, ịkụgharị, ịgwakọta. 2. Igwe nhicha: a na-ekewa ya na akara anọ A, B, C na D, nke An bụ elu ...
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