O-phenylenediamine (OPD) production capacity and output continue to grow, and my country’s industry concentration is high

                   O-Phenylenediamine (OPD), also known as 1,2-phenylenediamine and 1,2-diaminobenzene, has a chemical formula of C6H8N2 and is an organic compound. O-phenylenediamine appears as color…

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