▎ 摘　　要

NOVELTY - The diaphragm has a glue layer coated on a surface of a reinforcing layer. A substrate layer is made of polyether imide, polyethylene terephthalate, polyetheretherketone, polyphenylene sulfide material. Diluting agent is formed by mixture of graphene and graphite powder or graphene and thinner. Weight ratio of the graphene and the graphite powder is for about 5-10:9995-9990. The weight ratio of the graphene and the thinner is for about 5-10:5-10:999-9980. The reinforcing layer is completely covered. USE - Diaphragm. ADVANTAGE - The diaphragm has strong rigidity, and reduces resonant frequency. The diaphragm increases sound pressure and high and low frequency characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a diaphragm coating method. DESCRIPTION OF DRAWING(S) - The drawing shows a front sectional view of a diaphragm.