Marketing Department Tel: 13844848195
General Affairs Department contact number: 15948762485
R&d Department contact number: 0431-84625232
Production Department contact number: 18304316610
Website: www.stevebaxtermusic.com
Left image is long 374*width 160mm Concave aspherical primary mirror RMS 8.8nm
Right image is long 58*width 58mm Convex aspherical secondary mirror RMS 8.8nm
