pao4dKumpulan artikel dan berita Pao4d hari ini, terbaru, terlengkap, dan terkini! BERITA TERKINI Sudah Setor PPh 25 via Deposit, WP Tak Perlu Bikin Kode Billing LagiApplication. Polyalphaolefin 4 (PAO 4) serves as a Group IV base stocks and viscosity builders for a wide range of industrial lubricant products.