Sera ya parafini, yomwe imadziwikanso kuti crystalline sera, nthawi zambiri imakhala yoyera, yopanda fungo lolimba, ndi mtundu wamafuta opangira mafuta, ndi mtundu wa sera yamchere, ndi mtundu wa sera wamafuta.Ndi kristalo wa flake kapena acicular wopangidwa kuchokera ku distillate yamafuta opaka mafuta omwe amachokera ku distillation yamafuta osakanizidwa ndi kuyenga zosungunulira, zosungunulira zosungunulira kapena sera kuzizira crystallization, kusindikiza dewaxing kupanga phula phula, ndiyeno ndi thukuta kapena zosungunulira deoiling, kuyenga dongo kapena hydrorefining.
Sera ya parafini yoyengedwa bwino kwambiri, yomwe imadziwikanso kuti phulusa labwino, ndi yoyera yolimba m'mawonekedwe ake, yokhala ndi zotupa komanso zotumphukira.Zogulitsa zake zimakhala ndi malo osungunuka kwambiri, mafuta ochepa, osamangirira kutentha kwa chipinda, palibe thukuta, palibe kumverera kwamafuta, madzi, chinyezi komanso kutsekemera kwamagetsi.