To produce Beton and Sanitair in a good quality, CV ”WARNA INDAH” Malang needs right quality controll, so they can reduce deformity product and to prevent rise varians of product . Than product have high quality and fit with consumer demand. Because CV ”WARNA INDAH” MALANG never been using quality control so they use Taguchi Methods Signal to Noise Ratio ( S/N Ratio). Quality engineer…