1. 1) Lin W (1984) Vibration disease. 84-97 Publishing House of People Health, Beijing.
2. 2) Chinese National Standard (GB10434-89) (1989) Hygienic standard for hand-transmitted vibration in the work environment. Ministry of Public Health, Beijing.
3. 3) Chinese National Standard (GB/T 14790) (1994) Methods for the measurement and the assessment of human exposure to hand-transmitted vibration. Ministry of Public Health, Beijing.
4. 4) National Occupational Health Standard in China (GBZ7-2002) (2002) Diagnostic criteria of occupational hand-arm vibration disease. Ministry of Public Health, Beijing.