Based on the wind farm installation information provided by customers (including gearbox brand, model and quantity), AVISTT will analyze and customize exclusive gearbox spare programs for customers and sign specific cooperation agreements, mainly Cooperation Agreement on Repair of Wind Gearbox and Cooperation Agreement on Reserve of Wind Gearbox, etc. Some of the content is listed as follows:

o   Provide alternative exchange program for gearboxes of different brands and models

o   Store corresponding spare gearboxes for the customer and ensure the proper quantity

o   Provide drive chain programs with main shaft systems included

o   Be responsible for late delivery

o   Warranty of gearboxes will start from the date on which the gearboxes are delivered to customers