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About NTtank

Established in May 2007, NANTONG TANK CONTAINER CO., LTD (NTtank) is a professional ISO tank container manufacturer located in Nantong, China, close to Shanghai. NTtank is the first wholly owned subsidiary of Square Technology Group. (Stock Code: 603339). Besides NTtank, Square Technology Group has other five wholly owned subsidiaries and one research institute.

NTtank supplies both standard ISO UN Portable tanks and customized special tanks, with an annual capacity of 10,000 standard ISO tanks and 2,000 multi-type special tanks. To ensure high-quality tank containers, we have equipped with advanced production equipment, making us one of the most advanced production lines in the world's tank container manufacturing industry.

Guided by the Market Demands, Concentrating on Customers, Deeming Talents as Assets, Giving Top Priority to High Quality;


We have passed ISO9001, ISO14001, and ISO45001 system certifications, and obtained the C2 mobile pressure vessel manufacturing qualification, ASME certificate, and classification societies such as CCS, LR, BV, RMRS, DNV, and so on. Our products comply with the transportation management regulation of various European countries and America. Therefore, they can be transported globally. We currently have over 500 customers in more than 55 countries and regions, involved in financial leasing, logistics, transportation, energy & chemical industry, marine exploration, and electronic materials, which distributes to the sustained development and growth of Square Technology Group.

Guided by the Market Demands, Concentrating on Customers, Deeming      Talents as Assets, Giving Top Priority to High Quality;

Our History

With over 15 years of experience in tank manufacturing, NTTank has grown from producing our very first tank to an annual capacity of 10,000 tanks. Through this growth, we've honed our team to become among the top in the world.



2008 The first trial tank container successfully manufactured.



The application of completely PU foaming super insulation technology of tank fulfilled the need of international market. The ultra-low light framework passed railway impact test and successfully entered the Japanese market.



Offshore tanks have been put into the market and successfully entered the field of Offshore oil exploitation. The quality of offshore tank has been quickly recognized by customers, and the sales volume ranks first in the world.



NTtank successfully obtained ASME U stamp certification; SWAP tank passed German railway impact test, which indicated NTtank had been into the large volume tank container manufacturing field.



To meet the diversified transportation requirements of customers, SBC tank had been successfully developed. In the same year, NTtank obtained ASME U2 stamp and R stamp certifications.



Newly developed U2 gas tank successfully passed the railway impact test in Qiqihar. Anhydrous hydrogen fluoride tank, high purity ammonia tank and other special tanks stay at the heading level in the field.



NTtank obtained the design license of C3 special equipment, which marked our company's ability and qualification to design liquefied gas tank container and pressure vessel independently. .



Advanced new standard tank container workshops put into use, NTtank possesses the annual capacity of 8,000 standard tanks as well as 2,000 special tanks.

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Quality Control

Quality control is critical in tank production, and at NTTank, we have one of the most stringent checking procedures in the industry. Our experienced workers have continuously improved themselves over the past decade, ensuring that our tanks meet the highest standards of quality.

  • Hydraulic Test

    Hydraulic Test

    Every tank is witnessed with hydraulic test, air tight test, radiography test, etc.

  • Valve Assembly

    Valve Assembly

    With world’s advanced production machine, strict quality control on every production step.

  • Dome Pressing

    Dome Pressing

    Every tiny detail deserves our close attention, and every little action is an integral part of the company’s workforce.

Exporting Country

Customer Distribution

NTTank now serves over 100 customers in 17 countries worldwide, a testament to the trust our customers have placed in us. We're grateful for their continued support as we strive to provide the highest quality tanks and services.

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Our partners also trust NTTank to deliver high-quality tanks. With an independent supply chain, we're able to produce tanks to the highest level of quality, earning the trust of not only our customers but also our partners.

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Related Certificates

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