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Glasswool is undoubtedly an insulating content made from glass fibers, that is produced by melting glass at higher temperatures after which drawing it into great fibers.Polos (Plain) : jenis steel grating ini berupa plat kotak – kotak yang polos tanpa ada bagian yang bergerigi kecuali virkannya.Anda bisa mempercayakan segala kebutuhan Steel Grati