The main raw material of candles is paraffin wax, which is obtained by cold pressing or solvent dewaxing of petroleum wax fractions. It is a mixture of several higher alkanes, mainly n-dodecane (C22H46) and n-octacosane. (C28H58), containing about 85% of carbon, about 14% of hydrogen. The added materials include white oil, stearic acid, polyethylene, flavor, etc. The stearic acid (C17H35COOH) is mainly used to increase the softness. The specific addition depends on what kind of candle is produced.

Easy to melt, less dense than water, hardly soluble in water. Heated to melt into a liquid, colorless and transparent and slightly heated and volatile, can smell the unique smell of paraffin. Solidified to a white solid when cold, with a slight odor.

The lighting candle machine does not require much appearance when it is used, while the Buddhist candle machine has higher and higher requirements on the appearance. The best candle produced has the appearance of atmosphere and grade.