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- http://www.grandealliance.com.sg/contact-us/ (11 Feb 2019)
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+65 6286-3265
http://www.grandealliance.com.sg/contact-us/ (11 Feb 2019)
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+65 6281-1373
http://www.grandealliance.com.sg/contact-us/ (11 Feb 2019)