Priority should be considered to encourage businesses to participate by activating the low-noise machine certification system. However, the domestic low-noise machine certification system has not yet been significantly activated. There is a need for a system that only products that meet the environmental sign certification standards for low-noise construction machinery are recognized as "low-noise machines". A compliance evaluation agency (CAB) in the field of low-noise equipment should be introduced in Korea to help facilitate international certification of domestic company products. Therefore, it is believed that it will help expand the supply of low-noise machines through technology development and export improvement.

Abstract
1. 서 론
2. 본 론
    2.1 저소음기계 인정기준 및 등급제도 시행
    2.2 저소음기계 인증항목 의 확장
    2.3 국제인증 지원
    2.4 저소음기계 보급확대를 위한 개선 방향
3. 결 론
References

• 김우진(Catholic Kwandong University of Aviation Maintenance) | Woo-Jin Kim
• 김병삼(Professor, Dept. of Mechanical engineering Wonkwang University) | Byoung-Sam Kim Corresponding author