•Customer Development and Retention: Mainly responsible for developing new key accounts and keeping closed relationship with existing clients. Through both online and offline communication groups, exhibitions, industry associations and other channels, successfully developed 10 large corporations, and completed the promotion, execution and payment collection of 8 mega projects.•Communication and Negotiation: Actively communicate with clients to understand and explore their needs and formulate plans. By following client's feedbacks, communicate with them timely for the improvement to achieved the projects.•Data Analysis: Collect, refine, and analyze the historical data of distinct projects, including sales, prices, and other operating data to provide constructive solutions and suggestions to reach cooperation.•Organization and Coordination: Participated in "presence in the enterprise mirror" event. Responsible for coordinating with departments, planning event activities, inviting clients and introducing key projects to clients on site. Finally, the event was successfully held for 2 days and 26 enterprises were visited.•Proposal Writing and Development: Responsible for making bidding documents of mega projects, including compiling project plans, and cost statements, and other files needed by clients. Completed 37 bidding documents and 53 PPT slides.