宝信软件：公司天行T4系列PLC全面应用于梅钢1422热轧加热炉升级改造系统，目前正在现场调试过程中

Core Viewpoint - The company has successfully applied its T4 series PLC in the upgrade project of Shanghai Meishan Steel's "1422 production line," replacing a foreign large control system and is currently in the debugging phase [2]. Group 1: Product Application - The company's T4 series PLC is fully utilized in the upgrade of the heating furnace system at Meishan Steel's 1422 production line [2]. - The T3 and T4 series PLCs from the company can completely replace foreign mid-to-large PLC products [2]. Group 2: Competitive Position - The company's PLC products are positioned as fully autonomous and controllable alternatives to existing foreign PLC systems, such as Siemens S7-300, S7-1200, and S7-1500 [2].