CNG Cylinder Certificate is necessary for all cylinders more than three years old. Compliance Plate are installed with the car at car engine to ensure CNG Refilling at CNG Filling Stations. Cylinders are required to test at every interval of three years as per recent government norms.
Commercial Vehicles having more than three cylinders need to have at least three certificate of CNG Cylinders fitted with the vehicle.
Duplicate Certificate are also available with the Testing Agency at the cost of nominal fee.