Don't be fooled by the mandarins getsures - China has taken this position expressedly to position herself to extend in future, a simialr Sino-Pak N-deal, which no one will try to derail - China, apart from being a member of the NSG is more importantly, a veto-wielding permanent member of the UNSC, which gives her great leverage - leverage which she's been using with great frequency to further her own global agenda.