In order to conduct cleaner production audit for enterprises belonging to nocleaner production standard industry

a factor analysis framework combined with qualitative and quantitative method was proposed in this study. As a demonstration

an optical glass lens manufacturer was audited for cleaner production using the factor analysis method and the traditional cleaner production audit (CPA) method respectively. The result showed that

comparing with the traditional CPA method

using the factor analysis method could reduce CPA time by 40% and CPA cost by 32%

but obtain 97-90% audit benefits. This work provided a new approach and idea for cleaner production audit in nostandard industry.