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According to news from the financial industry on December 23, 2024, information from the State Intellectual Property Office shows that Boston Elevator (Huzhou) Co., Ltd. has obtain…
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Nanjing Huaxin Fire Protection has obtained a patent for high-temperature insulation fire doors, which can improve the high-temperature insulation efficiency of fire doors.
According to news from the financial industry on January 22, 2025, information from the State Intellectual Property Office shows that Nanjing Huaxin Fire Equipment Manufacturing Co…