Paraffin wax is a mineral wax is a petroleum wax; it is derived from crude oil distillation fractions by solvent refining, solvent dewaxing or frozen by the wax crystals, obtained by press dewaxing wax paste, and then the solvent off oil, refined flake or needle-like crystals derived. Also known as wax crystal shape, number of carbon atoms is about 18 to 30 mixture of hydrocarbons, the main group was divided into straight-chain alkanes (about 80% to 95%), with a small amount of individual branched-chain alkanes and with long side chains single-ring cycloalkanes (Taken together, the content of 20% or less). The main quality indicators for the melting point and oil content, the former said temperature capability, which said