Zopangidwa ku China zopumulira zamakina a zaulimi, mapulawo ndi mafosholo apamwamba a 65mn ndi 30MnB5, malo olumikizira nthaka yofanana ndi masika
Zogulitsa zonse zimapangidwa ndi chitsulo cha boron chapamwamba kwambiri, pambuyo popangira ndi kukonza kutentha, kuti zitsimikizire kuti chinthucho chili ndi kulimba kokwanira komanso kukana kuwonongeka. Zogulitsazo zimatumizidwa ku Russia, Lithuania, Spain ndi mayiko ena, pambuyo poyesa zinthu zambirimbiri ndi makasitomala, magwiridwe antchito ake ndi apamwamba kwambiri.
