General comments on manufacturing limits: • Manufacturing limits for spherical lens:Diameter:Dia1mm-Dia300mm,Radius2.5mm-∞S/D10/5,ever reach 0/0 in centre Dia3mm test area. • Available for customerized higher precision like S/D10/5,Irregularity<0.1 in Dia100mm. • Besides round shape,lens at shape of quadrate, polygonal or other perforated lenes are also available in Weoptics. • Weoptics has capability in manufacturing various spherical lens with a wide variety of optical materials. • Stable techinicalengineers,especially we have been accumulated 10 years technology deposition in polishing .Its level of technology is advanced in china.