Holtop wuxuu si guul leh u sameeyay taxanayaal cusub oo hawo-mareeno ka soo kabasho kulayl ah, kuwaas oo ku qalabaysan wax-ku-oolnimada sare ee saxannada nooca aluminium beddelayaasha kulaylka. Waxtarku wuxuu noqon karaa ilaa 85%, waana heerka ugu horreeya ee tignoolajiyada soo kabashada kulaylka ee Shiinaha.
