G10 G11 FR4 Epoxy Fiberglass Cloth Insulation Tubes bụ nke akwa akwa iko na-enweghị alkali jikọtara ya na resin epoxy. Ọ na-laminated na mkpanaka ebu n'okpuru elu okpomọkụ mgbali. Enwere ike imepụta tubes mkpuchi ọkụ site na teknụzụ twine.
E wezụga ihe mkpuchi tubes, anyị na-emepụta epoxy iko ákwà laminated mkpara dị iche iche dayameta na ogologo.