值得一提的是，年初，双象股份发布2024年度业绩预告： 归母净利润同 比大涨714.97%~841.74% ；扣除非经常性损益后的净利润 同比增长122.08%~ 210.91%。 而本次业绩大涨的原因主要是由于其全资子公司重庆双象光学材料有限公司 ...

PMMA, polymethyl-methacrylate, is a thermoplastic acrylic linear polymer, the mer of which is illustrated in the diagram. PMMA is transparent, with a refractive index of 1.49, and easily formed into ...