There are two versions of this blade. One sold in Vietnam, one sold in Thailand. Both are made in China. When you mention "GST: China", I assume you are referring to the Razor Blades Club site? The one they have listed as China is for Vietnam. The difference in appearance is due to promotional packaging (chance to win gold).
I prefer the Vietnamese Platinum.
Vietnamese - Gillette Super Thin Platinum:
(this version of the packaging notes the blades are made using Japanese steel)
Thai - Gillette Super Thin:
Discontinued - Gillette Super Thin (Non-Platinum), Vietnam:
Don't know if there was ever a Pliatnum version for Thailand