Why does POWERGOOD use six-sided metal design？

Name: POWERGOOD TECH. RESEARCH CO., LTD.
Address: 5F, No. 40, Keya Rd., Daya Dist., Taichung City (Taichung Science Park) 42881, Taiwan, TW
Telephone: +886 4-25680448
Price range: $$

Six-sided metal case packaging can provide 100% RFI shielding, no radiation interference, but also can make the product has better heat radiation effect.

What else benefits does a six-sided metal case offer?

Further reading: POWERGOOD Classroom: Why are PowerGood′s brick type modules encapsulated with 6-sided metal case?

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