Bawuti
Mapeto awiri amapangidwa kuchokera kuzinthu zosiyanasiyana zapamwamba, zomwe zimasankhidwa kutengera zomwe zimafunikira pakugwiritsa ntchito mphamvu, kulimba, komanso kukana dzimbiri. Mpweya wa carbon ndi imodzi mwa zipangizo zomwe zimagwiritsidwa ntchito kwambiri, makamaka m'makalasi monga 4.8, 8.8, ndi 10.9.