The EU's adoption of the Hydrogen Trade Security Regulation marks a significant milestone in the global green hydrogen trade landscape. The regulation focuses on green hydrogen certification standards, carbon tariff exemptions, and supply chain traceability, aiming to redefine market dynamics. Aligned with the Renewable Energy Directive, it sets ambitious import targets and highlights the use of green hydrogen in high-emission sectors. The EU's move is motivated by factors such as energy security concerns post the Russia-Ukraine conflict, the need for competitive positioning in the green industrial landscape, and proactive engagement in international climate negotiations. By exempting green hydrogen from tariffs, the EU aims to extend its carbon pricing influence globally, setting standards and influencing other countries. Domestic enterprises are faced with both challenges and opportunities. While certification costs are high, tariff exemptions offer cost-saving benefits. Enterprises need to comply with supply chain requirements to avoid market exclusion based on carbon intensity. Technological route divergence is observed, with different electrolyzer technologies facing varying pressures and benefits. The shift towards green hydrogen certification as a value symbol involves advanced infrastructure like digital twin systems, blockchain evidence storage, and third-party verification. This highlights a transition towards green hydrogen as a premium product in the international market, emphasizing sustainability and compliance standards.