Our products are guaranteed to give you 100% satisfaction in every way. Just ask a Return Material Authorization number to return anything purchased from us if it proves defective in material or workmanship, don't meet the applicable specification or otherwise.

From material selection to shipping, every piece of the crystal and optical component are under strick control in OptoCity. We have experience in engineering design, fabrication and assembly of crystals and optical components. We guaranteed every piece of crystal or optical component is defective free both material and workmanship before it leave OptoCity.

Of cause, we want you to be the final judge of quality. If you're not satisfied with your purchase, we'll replace it or give you your money back. It's that simple. We value you as a customer and base that our bussiness begins and retains year after year. We commit to provide our customers with the best crystal and optical components, plus excellent customer service which you deserve.