... for more than 15 years.We specializes in manufacturing and exporting gas cylinders and its related products,such asacetylene cylinders ,CNG cylinders ... , CNG station equipments, storage cylinders,compressors,calcium carbide and so on.Our main foreign markets are IRAN,Thailand, ... from DNV, LRS, GL, BV, RINA and CCS so on Specifications and some photos are as follows Classification Certificates Fire ...