Hi Sam,
We do have a supplier in our directory that carries the brands that you mentioned, but this distributor is located in the US. They offer international shipping though.
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If you would like to source those products from Indonesia and Singapore, I suggest that you contact the international authorized distributors for the brands you are looking for:
Optimum Nutrition-
PT Nutriprima Jayasakti
tel: (62 21) 8317767
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ONI Global Pte. Ltd.
Loo Lim Teh / Teck Seng Kow
(65) 6281 5688
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Muscle Pharm-
Company: Darcom Jaya
Contact: Michael
Email:
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Phone: 62-87881555953
Company: NutriFirst Pte Ltd
Contact: Barnabas Huang
Email:
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Phone: +65 6744-0600
ASN Nutrition - they do not have an international distributor in Singapore and Indonesia, only from Malaysia
AST Sports Science Nutrition
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PH: 60 + 012-553 9445
Hope this helps! All the best! :)