As the earliest seamless gas cylinder manufacturer in Shandong Province, with the special equipment production license, medical device production license, TPED certificate and other certificates, SHANDONG LJG HIGH PRESSURE VESSEL CO., LTD expanded a new plant in 2021 with new registered trademark "Lu Jiangao". With 700,000 pieces of cylinders annually output, the company mainly produces oxygen cylinders, argon cylinders, nitrogen cylinders, carbon dioxide cylinders and other seamless steel cylinders and medical oxygen supplies. Cylinder color, valve model, steel stamp content, handlebar and cap all can be customized.