Manja a chingwe chozindikiritsa kutentha kwa kutentha adapangidwa kuti akwaniritse zofunikira pakuzindikiritsa mawaya ndi chingwe, zida, mapaipi ndi zida zogwirira ntchito kwambiri. Wopangidwa kuchokera ku polyolefin yodalirika yamoto-retardant yokhala ndi zinthu zabwino kwambiri, manja amatha kugwiritsidwanso ntchito ngati kutchinjiriza kwamagetsi. Zizindikiro zimakhala zokhazikika pambuyo posindikiza.