Customers assess nanotechnology products based on several criteria, including performance, cost, scalability, and safety. Performance is often gauged through rigorous testing to ensure that the nanomaterials or devices meet the required standards. Cost-effectiveness is another critical factor, as customers seek solutions that provide a good return on investment. Scalability is also important, especially for industrial applications, to ensure that the technology can be produced in large quantities. Safety concerns are paramount, as the long-term effects of nanomaterials are still being studied.