Optimal Engineering Sdn Bhd (1110606-M)
2, Jalan Sungai Keramat 5, Taman Klang Utama, 42100 Klang, Selangor, Malaysia.
电话: +6019-319 6886
邮件: optimal_eng@yahoo.com.my
网址: https://www.optimaleng.com.my
网址: https://optimaleng.newpages.com.my/
网址: http://optimaleng.n.my/
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