Harga Terjangkau: Emumnya memiliki harga yang lebih terjangkau dibandingkan emas murni, sehingga lebih mudah diakses oleh berbagai kalangan.The runway safety spot (RSA) enhances the protection of plane that undershoot, overrun, or veer from the runway. The RSA gives a clear, graded space which gives additional Place for pilots to bring their plane