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 12,000 standard ISO tanks and 6,000 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.