Yes the cylinder is of superior quality, much better than the other cylinders. There are 3 companies, influx, EKC and Faber. EKC is an Indian company but the import route is through Dubai into Pakistan. Faber is Italian but due to member of EC, it has converted to Euro and therefore LCs opened for them cost more.
Volume is 55 Kg. I have driven 150 kms with A/c and 175 without A/c Baleno 2005.