Real graphene is transparent. There are many unscrupulous businesses selling black film products in the name of graphene. This is an act of deceiving consumers and confusing the public about graphene. Cognition, in fact, real graphene is transparent. Graphene is transparent. I only learned about graphene after purchasing graphene products from Enwang. Their company is truly engaged in scientific research and has a patent for pure graphene transparent heating film. , their graphene diaphragm is transparent.