The CNG business model is well supported by our upstream suppliers primarily consisting of PetroChina Company Limited, which utilises the West to East Gas Transmission Tunnel to supply to our CNG mother stations, with our own logistics fleet being the major logistic system for distribution to the location of our CNG vehicular refuelling stations and the locations of our customers while some of our wholesale customers may also arrange for their own logistics arrangement. Our downstream portfolio consists of CNG vehicular refuelling stations and our customers consist of a variety of retail and wholesale customers.