Suqian Liansheng announced that the company recently obtained 2 invention patent certificates issued by the State Intellectual Property Office, namely “a catalyst for the synthesis of triacetone amine in a fixed bed and its preparation method and application”. The patent numbers are ZL 2024 1 0458555.4 and ZL 2023 1,0759662.6, respectively. The average number of authorization notices is July 24, 2026, and the patent period is 20 years. The patent will not have a significant impact on the company's recent production and operation, but it is conducive to improving the intellectual property protection system and enhancing core competitiveness.

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