NTSG.Established in 2001, NTSG specializes in the research, development and manufacture of pressure vessels, pressure piping components and hydraulic metal structures. Our main products include fixed pressure vessels (Class A1, A2), metallic/non-metallic expansion joints, rotary compensators, pressure steel pipe expansion joints, etc., covering gas equipment, machinery parts, marine accessories and special equipment for oil drilling. Our business involves production, sales, installation and maintenance, and our products are widely used in many industries such as energy, transportation and industry, providing one-stop solutions.