新恒汇：主要业务包括智能卡业务、蚀刻引线框架业务以及物联网eSIM芯片封测业务

Core Viewpoint - The company, Xin Heng Hui (301678), has outlined its main business segments, which include smart card business, etched lead frame business, and IoT eSIM chip packaging business [1] Group 1: Business Segments - The smart card business is one of the primary operations of the company [1] - The etched lead frame business primarily provides lead frames for integrated circuit packaging [1] - The IoT eSIM chip packaging business is applied in various fields, including wearable devices, IoT consumer electronics, and industrial IoT [1]