Uru ngwaahịa;
1)Okpokoro fanye n'ịntanetị yana gluu.ikpo anaghị ewepụ.
2)30 ugboro gbasaa.
3)The ala mgbasawanye temp. bụ 180 ℃ ka 200 ℃.
4)Njikọ-extrusion iji hụ na isi ihe adịghị adapụ.
5)Asambodo nke Warrington, BS EN 1634-1 nnwale.
6)Akara nbipute n'ịntanetị na akara ogbe na ngwaahịa.