Proenamel pin badge In the full sense, pro-enamel or imitation hard enamel is an imitation of hard enamel with similar surface finish to hard enamel. The craftsmanship of pro-enamel is almost the same as hard enamel except pro-enamel does not need firing, but drying up in an oven. Due to the different enamel material used and processes employed, the finish of pro-enamel smoother and shinier than hard enamel. The enamel is softer than hard enamel though, pro-enamel is the so attractive as hard enamel. As per request.