1.1.12 insinyur akustik, isolasi suara | services provided in the field of acoustics calculations, soundproofing, acoustic concepts for special requirements (theaters, conference rooms) |
Unit referensi | persen | harga minimum | 0.369 $ (Dolar Amerika Serikat) | harga rata-rata | 0.615 $ (Dolar Amerika Serikat) | harga maksimum | 1.23 $ (Dolar Amerika Serikat) |
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