Business

01 Energy Project Investment & Plant Operation

SEPMEM operates 12 natural gas plants, including the largest scattered gas recovery facility in China, the Manshen LNG Plant. SEPMEM seamlessly integrates engineering design with production operations, using design to guide production and utilizing operation data to optimize design, creating a positive feedback loop. With over 20 years of continuous development and innovation, SEPMEM has become a leading integrated service  provider and operator in the natural gas field and industrial gas treatment field in China.

02 Natural Gas ODM Services

Since completing its first natural gas ODM project in 2018, SEPMEM has successfully undertaken multiple LNG ODM projects for PetroChina and Sinopec. By consistently delivering high-quality service and demonstrating advanced technical expertise, SEPMEM has significantly expanded its market share, earning widespread recognition and positive feedback from customers.  In this ODM business model, our partner is responsible for supplying raw natural gas, and selling the final products, while we are responsible for plant construction and operation, overseeing both processing and risk control  in our partnerships. This strategic alliance allows our partner to achieve economies of scale, reducing risk and  increasing profitability, by leveraging the strengths and resources.

03 Equipment Supply and Technical Services

SEPMEM has successfully completed over 500 projects across various sectors, including chemical engineering, natural gas processing, industrial gas separation, new energy technology development, and the design and application of energy-saving and environmentally friendly devices. With patented technologies, and massive engineering experience, SEPMEM offers integrated services, including process package development, engineering design, equipment supply, plant commissioning, and ongoing production and operations support.

04 Research & Development

Hydrogen

Hydrogen can be classified into four categories: green hydrogen, blue-green hydrogen, blue hydrogen, and gray hydrogen. Green hydrogen is produced through the electrolysis of water using renewable electricity sources, such as solar and wind power. Blue-green hydrogen is generated by cracking hydrocarbon gases, while blue hydrogen  is produced via steam reforming of hydrocarbons. Gray hydrogen is derived from coal. All types of hydrogen are 5N high-purity hydrogen, produced through high-precision PSA purification, following the pretreatment and  removal of most water, oil, and solid impurities.

Helium

Our helium purification technology, protected by independent intellectual property rights, can be customized based on gas composition, processing scale, purity requirements, and cost-performance ratio. The number of purification stages is determined by the composition of the raw gas, with helium purity reaching up to 99.999%. The design, installation, and integration of selected instruments and valves ensure a sealed, reliable system that minimizes leakage. The process is straightforward and features a fully automated switching and filling system,  enabling the automatic filling of gas cylinders, bundled trucks, and filling compartments.

Nanocarbon

Nanocarbon is produced through the high-temperature cracking of hydrocarbon gases, such as methane, in the  presence of a catalyst, yielding hydrogen and carbon nano onion (CNOs). CNOs exhibit a high specific surface area, exceptional strength, low density, and high thermal and electrical conductivity.