Choosing a professional and reliable ODM manufacturer is crucial to brand market success in the fiercely competitive global market. This guide systematically elaborates on the core screening standards for ODM partners from five key dimensions: industry experience and market insight, software and hardware R&D capabilities, manufacturing capacity and production flexibility, quality control and compliance systems, and internal operational management. Meanwhile, it takes Shenzhen Huizhizhen Smart Technology Co., Ltd (JMK Smart) as a practical example, illustrating the comprehensive strengths of a high-quality ODM manufacturer. It provides professional and actionable reference for international buyers to conduct supplier due diligence, reduce supply chain risks, and select long-term strategic cooperative partners.