Monga China kutsogolera composites wopanga, ZBREHON amapereka osiyanasiyana mankhwala apamwamba ndi ntchito mabuku, kuphatikizapo ntchito fiberglass akanadulidwa chingwe.
Ulusi wodulidwa wa fiberglass, womwe umadziwikanso kuti ulusi wagalasi wodulidwa, ndi chinthu chofunikira kwambiri cholimbikitsira popanga zinthu zambiri, ndipo kugwiritsa ntchito kwake kuli ndi zabwino zambiri zomwe zikuyenera kufufuzidwa.