Is that retaking an MBA again will help my carrer?

Hi,

I really need a guidance. I completed my Bachelor in Science and after that I did my MBA (from not top school) with 7.8 and currently I'm working in Taiwan government as in Management area. I'm thinking of redoing my MBA because it will help me to grow in my career . can anyone tell me whether is it good to retake an MBA again in Top B school so that it will help me or else can I take MS in Management .

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