- Griyasound
- Address:Jl.Mangkubumi No.87 Medan Sumatera Utara 20153 Indonesia
- Indoisapsound Co.,Ltd
- Address:Jamin Ginting street, no. 35 MEDAN North Sumatera 20155 Indonesia
- Indosonostron
- Address:Rawa Buaya No.302 Tangerang Banten 11541 Indonesia
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