Nynas Petroleum is the world largest naphthenic oil company and has done a lot of research and testing work in this field.

Taking the blend of naphthene base oil and tea oil after treatment as base oil,adding proper additives,the obtained oil was applied to combined press series.

The factors that influence the noise performance of lithium-based grease were researched,the cleanliness of grease is merely one of essential conditions to decrease noise,the particle size of lithium soap thickener is smaller,the noise performance of grease is better,and the low viscosity naphthene base oil has good effect to decrease noise,the polymer can improve lubricity and decrease noise.

It is considered the hydrogenated base Stock has clear advantage superior to the naphthene base oil by comparison the physiochemical properties and electrical properties of hydrogenated base Stock and naphthene base oil,and can be formulated the transformer oil.

The SBR sponges with high foaming rates were prepared by use of SBR matrix,borate coupling agent modified clay naphthenic oil and foaming agent as additives and the properties of vulcanizates were investigated.

PP/POE/buffings thermoplastic elastomer was prepared by using dynamic vulcanization,and the effects of 2 kinds of softener(naphthenic oil and paraffin oil) on the mechanical properties,processability and hot oxygen aging resistance of the system were studied.