Copton Becomes Lubricant Supplier for China’s Jiaolong Manned Submersible, Supporting Deep-Sea Exploration

The deep ocean, home to abundant resources and scientific mysteries, stands as a strategic frontier for global technological competition. As an iconic national deep-sea equipment, the Jiaolong manned submersible has marked a milestone in China’s deep diving journey. Copton is proud to announce that it has officially become the lubricant supplier for the Jiaolong submersible, powering this national heavyweight equipment with premium lubrication technology for deep-sea expeditions.

Jiaolong: Crafting China’s Deep-Sea Legacy

Developed and integrated independently in China, Jiaolong is a world-class work-class deep-sea manned submersible. It set a world record of 7,062 meters for submersibles of its kind, making China one of the few nations mastering deep manned diving technology.

For decades, Jiaolong has carried out hundreds of scientific missions across the Pacific, Indian and Atlantic Oceans. It has overcome critical technical challenges including high-pressure sealing, deepwater communication and underwater power systems, winning the First Prize of the National Award for Progress in Science and Technology. In 2025, Jiaolong completed China’s first manned deep dive in the Arctic ice zone, another historic breakthrough. Today, it is one of the most active manned submersibles worldwide, undertaking more than half of China’s global deep-sea manned dive missions.

Copton: Reliable Lubrication Guardian for Jiaolong

Deep-sea diving imposes extreme conditions: ultra-high water pressure, drastic temperature swings, high humidity and strong corrosion, which place stringent demands on submersible power systems and equipment protection. The performance of industrial lubricants directly determines the reliability and operational safety of Jiaolong. Being selected as its lubricant supplier is high recognition of Copton’s technical strength and product quality.

This cooperation is built on a solid foundation. Back in 2014, Copton lubricants and antifreeze were adopted by China’s National Antarctic & Arctic Research Expedition Team, serving the Xue Long icebreaker to support polar exploration.

As a leading domestic listed lubricant enterprise, Copton has long focused on advanced lubricant R&D and manufacturing. It holds proprietary nano lubrication technology and multiple national invention patents. The company has passed a full range of international quality system certifications, with strict quality control covering raw material inspection, production and finished product delivery. Every batch of lubricants undergoes rigorous testing.

Strong Indigenous Capabilities: Chinese Brand Empowers National Ambitions

Supplying lubricants for Jiaolong marks another major achievement for Copton following its participation in the polar Xue Long project, representing a key breakthrough in high-end equipment supporting services.

Copton keeps innovating to develop lubricants that meet strict requirements for deep-sea engineering, heavy industry and extreme operating environments. From polar ice to deep ocean trenches, Copton’s lubrication technology continuously safeguards China’s major national projects. This partnership showcases the strength of Chinese manufacturing and homegrown brands. As Jiaolong continues its voyage into the abyssal sea, Copton will keep delivering robust lubrication solutions to protect China’s deep-sea exploration.