ZHEJIANG SHENGZHOU TRULY IMPORT AND EXPORT CO.,LTD.’subordinate factory，after years of continuous innovation and research and development, the products have formed five series, more than 50 kinds of products.
Synthetic ester lubricating oil base oil: low freezing point, high flash point, high viscosity index of double ester, single ester, polyol ester, polyacid ester, composite ester and other ester base oil as the dominant.
Automotive engine coolant corrosion inhibition compound: organic (semi-organic) coolant corrosion inhibition compound and polycarboxylic acid corrosion inhibitor as the leading.
Glass fiber additives: glass fiber infiltrating agent, glass fiber mesh fabric styling adhesive as the leading.
Glycerin and polymer functional additives: glycerin, wig styling adhesive as the leading.
The core products of our factory are synthetic ester lubricating oil base oil, which has an annual production capacity of more than 8,000 tons, of which the production capacity of polyester products is 2,000 tons and fills the domestic gap, the engine coolant corrosion inhibition compound is more than 1,500 tons, the annual production capacity of glass fiber additives is more than 3,000 tons, and the annual production capacity of special plasticizers is more than 2,000 tons. The performance and quality of the products can be comparable to those of world famous brands such as Heda and Mobil. Products have been used by Sinopec, Shantui, Liugong, Hafei, FAW and other large enterprises, and exported to overseas, in the European Union and other countries and regions have fixed customers, long-term cooperation, and high quality has been recognized by customers at home and abroad. At the same time, the engine coolant corrosion inhibition compound series products produced by our company have been tested by the Chinese People's Liberation Army oil and oil equipment testing and testing center, and its technical indicators have reached the ministerial standards and national standards.
The quality control in the production of lubricating base oil involves a series of measures to ensure that the final product meets specific standards and performance requirements. Key aspects include:
Raw Material Selection 
Refining Processes 
Additive Incorporation 
Testing and Analysis 
Compliance with Standards Product stability refers to the ability of the base oil to maintain its properties and performance over time under various conditions. Key factors include:
To ensure both quality and stability, manufacturers implement:
Strict Process Controls:Monitoring and controlling each stage of production to maintain consistency.
Advanced Analytical Techniques: Using techniques like gas chromatography and mass spectrometry to detect and quantify impurities.
Regular Quality Audits:Conducting audits to ensure compliance with internal and external standards.
Customer Feedback and Continuous Improvement: Using feedback to refine processes and improve product quality.
The performance and quality of the products can be comparable to those of world famous brands such as Heda and Mobil. Products have been used by Sinopec, Shantui, Liugong, Hafei, FAW and other large enterprises, and exported to overseas, in the European Union and other countries and regions have fixed customers, long-term cooperation, and high quality has been recognized by customers at home and abroad. At the same time, the engine coolant corrosion inhibition compound series products produced by our company have been tested by the Chinese People's Liberation Army oil and oil equipment testing and testing center, and its technical indicators have reached the ministerial standards and national standards.
