Jiheng optics cooperated with lambda research Optics inc. In 2000 and became the chinese supplier of lambda inc. Jiheng optics was independent from lambda in 2006. Thanks For the cooperation with lambda, we had completed the quality control system of our products. All our customers in domestic and Abroad approve with our quality standard. Our quality standard is mil-o-138030b , iso10110 and din3140. If we have the chance To collaborate with you, you can get high quality products like you bought from abroad or even better than them.