maintain the existing clients
Responsibilities:1) Assist Director for planning and execution of projects;2) Develop new brand clients and sell booths and sponsorships;3) Maintain the existing clients;4) Achieve sales targets;5) Execute and manage event projects;
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maintain the existing clients
维护现有客户
以上为机器翻译结果，长、整句建议使用 人工翻译 。