A、Currently, there is no capacity for methods of higher nanoparticle removal efficiency.
B、Currently, there are no capacities for higher nanoparticle removal method efficiencies.
C、Nowadays, there is no capacity for higher nanoparticle removal method efficiency.
D、There is no capacity for the development for higher nanoparticle removal at the present time.
E、Currently, methods to more efficiently remove nanoparticles are lacking.