Since the foundation of Sinoseal Holding 40 years ago, the company have been researching sealing technology in the application of petrochemical industry and its related processes.
We began our R&D for many types of petrochemical plants of various capacities such as 500 tpa refinery ,120K tpa ethylene, 80k tpa alkylation, 300k tpa synthetic ammonia and 150k tpa PTA plants. To date, we have successfully applied our technology on larger plants, which included 20 million tpa refinery and 1 million tpa ethylene plant.
In total, we have supplied and installed more than 200K sets of API mechanical pump seals and 1000 sets of dry running gas seals for compressors. A large number of these seals are installed in the critical compressors and pumps used in these petrochemical plants.
As a result of 40 years of hard work, Sinoseal have accumulated vast industrial related application experience and earned the trust of our valued customers. Consequently, Sinoseal have achieved the following milestones;  
● highest sales revenue in China domestic mechanical seal market,
● market share leader in petrochemical industry,
● market share leader in dry gas seals 
● market leader of high parameters seals 
In addition to China, we also export our reliable products as well as share  application experience with customers in the international market in Asia Pacific, Middle East and Central Asia.