We provide 30 days unconditional return and exchange service. Products must be delivered with integrity. If there is any quality problem during the warranty period, we will provide you with free repair service. If the warranty period ends, you will be charged for repairs based on the actual situation.

　　Contact  sales@ ch-optics.com  for OPTICS  FIBER OEM

　　Pass/Absorption spectrometry system

 　　Pass/Absorption spectrometry system