National Aviation Fenghua Machinery Factory The application of Navigator Expert System for Vibratory Stress Relief in our factory   We have serious problem with deformation during our processing, thus becomes a bottle neck for us to ensure the product quality and production progress. It draws attention from factory leaders and military representatives after decade¡¯s efforts with no result. For this reason, our factory decided to resort to Vibratory stress relieving when NST and freezing stress relief all failed to tackle the problem. We know from research on Vibratory stress relieving companies and users that Beijing Semboo Science and Technology Co,.LTD. is a leading Vibratory stress relieving company in the nation, so we undertook the Vibratory stress relieving experiment on its Navigator Expert System for Vibratory Stress Relief. Result turned out to be very ideal. The work pieces, treated by Vibratory stress relieving, all meet the requirement. As a result, our assessment group identifies that this Vibratory stress relieving equipment can solve our years difficulty. We also decided to purchase from Beijing Semboo Science and Technology Co,.LTD. Navigator Vibratory stress relieving equipment with its many advantages as simple operation and low noise. This equipment is put into use in our factory now.                                                     December, 2005