GRAND ROYAL.COM ft HBE Centrado - Pabrikan & Distributor Produk Elektrik - Transformer, Trafo: Centrado, Trafindo, Unitraf - Stabilizer: Matsuta, Matsuyama, Yoritsu, Nishikawa - UPS: Delta Power, Riello, Yoshiga, Gama - Capasitor Bank - Box Panel, MCCB, ACB, Cable Tray - PT Hidup Baru Electric - CV Centrado Prima