Naphthenic Base Oils - Refined from sweet crude oil distillates. Naphthenic base oils have a very low
aromatic content and a low paraffin (Wax) content. These characteristics allow for a low pour point on lighter viscosities and a
high degree of solvency where heavier viscosities are required.

Naphthenic oil is a reasonable choice for the following special properties:

1. High solubility

2. Excellent low temperature performance

3. Excellent compatibility with some resins and polymers

4. Good plasticization and mutual solubility with rubber

Typical application markets of naphthenic base oil are:

1. Transformer oil, which provides cooling and electrical insulation performance;

2. Process oil, which is used in a large number of chemical processes to provide excellent solubility;

3. Lubricating oil, which is used to produce metalworking fluids, grease and industrial oil.

4. Rubber filling oil: A variety of rubber can be used as plasticizer and filling oil to improve the plasticity and elasticity of rubber.

Dongdu Biology is a company that develops and sells high-end chemicals. Our company aims to provide 

all-round and professional technical solutions and products and services for domestic and foreign customers 

in line with the principle that professionals do professional things; The company has its own independent 

research and development team, perfect experimental facilities and advanced testing instruments, and at 

the same time, it is equipped with complete production equipment for product extraction, separation, 

synthesis, fermentation and strict quality control system to ensure the stability of product quality from all aspects.

The company has 10, 000-level and 100, 000-level purification workshop that meet GMP standards, and 

fully automatic production equipment. The high quality and reasonable cost of our products have won 

warm welcome from many customers. From material procurement, production process to product testing, 

we have established a strict quality standard inspection system. Every link from packaging, delivery, 

shipment to transportation has been inspected at different levels. Pursuing excellent quality is the core 

driving force of our development, and serving customers wholeheartedly is our eternal purpose!

Division I provides customized packaging, customized production and other personalized customized 

services, and supports various modes of transportation such as land, sea and air, and strives to bring 

customers a quality cooperation experience. Our products are popular in North and South America, 

Europe and Southeast Asia. We look forward to cooperating with new and old customers.

Q: Are you trading company or manufacturer ?
A: We are factory.