There is a trend of increasing resources in the naphthenic oil market recently, but at present, due to less raw materials, only some refineries can produce it. Naphthenic oil is extracted from naphthenic crude oil, and compared with paraffin-based resources, its reserves only account for about 2%-3% of the world's proven oil reserves, which is a scarce resource. China has abundant resources of naphthenic crude oil, and the main production areas are concentrated in Karamay, Xinjiang, Liaohe Oilfield, Dagang Oilfield in North China and Bohai Bay area.

Naphthenic oil has a saturated ring-loaded carbon chain structure, with low pour point, high density, high viscosity, non-toxic side effects and other advantages, and in its ring is usually connected to a saturated branched chain. Because of this structure, naphthenic oils have the properties of aromatic hydrocarbons and straight-chain hydrocarbons, and have the advantages of low price and reliable source, which determines that naphthenic oils can have special uses in many fields.

Naphthenic oil has a wide range of uses, mainly reflected in the following aspects:

1. Rubber filler oil, can be used in a variety of rubber as a plasticizer and filler operating oil. To improve the plasticity and elasticity of rubber.

2. Transformer oil, due to the low freezing point of naphthenic oil, can produce low condensation transformer oil or other low condensation oil. Naphthenic oil is the world recognized both to meet the insulation and cooling requirements of the transformer, but also long-term stability of the work.

3. Freezer oil, due to the special nature of the work, the requirement of freezer oil to have a low pour point, and the requirement of freezer oil and refrigerant can be mutually soluble between the oil, at present, only naphthenic oil can be achieved.

Naphthenic oil was only produced by Karamay and Liaohe petrochemicals, but now, Zhonghai Jinxiang and CNOOC Taizhou have outputs, and the naphthenic products are mainly transformer oil and rubber filling oil. With the rapid development of electric power and rubber industry, the market is becoming more and more dependent on naphthenic oil. Naphthenic oil has the characteristics of environmental protection, low wax content and low freezing point, etc., and there is more space for development in the later stage. Take the transformer, with the national power grid construction continues to promote the transformer oil industry to obtain a broad space for development, the future of small and medium-sized small transformers become the direction of industry development, and the corresponding transformer oil will also be driven by this. For the rubber industry, due to the country's environmental protection, health and safety calls for more and more high, naphthenic oil in the rubber industry will be more and more widely used.