translation.en: Typically our retrofit designs save about 30 to 60 percent of the energy and pay back in a few years, while the new facility designs save 40 to 90-odd percent with generally lower capital cost.
translation.zh: 尤其是我们的改进设计 可以省下30-60%的能源 几年内就能得到投资回报 设计新设备也将省下四成到九成多的能源 一般也能降低资本成本