About product and suppliers:
            890 670nm optical filter products are offered for sale by suppliers on Alibaba.com, of which optical filters accounts for 9%, lenses accounts for 1%. 

A wide variety of 670nm optical filter options are available to you, such as optical. You can also choose from glass 670nm optical filter, as well as from plano 670nm optical filter, and whether 670nm optical filter is plano-convex. 

There are 93 suppliers who sells 670nm optical filter on Alibaba.com, mainly located in Asia. The top countries of supplier is China, from which the percentage of 670nm optical filter supply is 100% respectively.