Ngokwe-geologically, i-Slate iyidwala le-metamorphic elicwengekile elakhiwe ngamadiphozi omlotha we-sedimentary noma wentaba-mlilo okuthe nge-metamorphism kuye kwashintshwa ngamakhemikhali nangesakhiwo.I-slate inemigqa emibili echaziwe yokuphuka - ukuhlukanisa nokusanhlamvu.Lokhu kwenza kube nokwenzeka ukuhlukanisa isileyidi sibe amashidi amancane, angase asikwe futhi abunjwe abe ama-roof slates, kanye nezinye izinhlelo zokusebenza eziningi.
I-CDPH Slate isebenzisa iminyaka yethu yokuhlangenwe nakho ukuze iqinisekise ukuthi ikhwalithi yamathayela ezileyithi emvelo idlula lokho okulindelwe amakhasimende ethu, kokubili kuzici zangempela zomkhiqizo kanye nokuncintisana kwamazinga esingawanikeza.
Isileti sethu singasetshenziselwa Amathayela Odonga, Amathayela Aphansi, Amathayela Okufulela, Itshe Lokugandaya, Izitebhisi, AmaCurbs, I-Kerbstone, Ama-Crazy Pavers, Amatshe efulegi, Izitebhisi, Itshe Lokunyathela, Izinyathelo, Uthango namaChips.