Responsibilities: Understanding of the operational principles, functions, installation processes, and knowledge of key products like photovoltaic storage systems, inverters, batteries, and brackets. Pre-Sales Technical Support: Understanding customer requirements and providing comprehensive pre-sales technical support. Collaborating with the sales team during client negotiations to address technical queries. Clarifying customers' technical issues in the project's early stages, including on-site technical surveys when necessary. Developing and refining pre-sales training materials, and delivering both online and offline technical training to clients. During-Sales Technical Support: Enhancing training materials related to installation processes and providing relevant training to clients, both online and offline. Offering on-site guidance during installation as needed. Post-Sales Technical Support: Promptly addressing technical quality issues raised in customer complaints. Resolving queries about product usage, maintenance, and replacement, including on-site support when necessary. Improving post-sales operation and maintenance training materials, and providing related training to customers, both online and offline. Qualifications At least 2 years of experience in the photovoltaic industry, preferably with practical experience in household photovoltaic storage systems. Bachelor's degree