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Company Profile
Optolong Optics Co., Ltd is the brand owner of optolong who is a manufacturer of astronomy filters, fluorescence filters. We also offer other interference filters like UV filters, visible filters and Near inferred filters, beam splitter, anti-reflection coating and optical mirrors as a OEM service. Located in Kunming city in China which is one of the four optics center and the coating experience of 23 years (since 1999) enable us to design and produce the filters with most sophisticated spectrum. We are glad to declare that Optolong has been become the first and only non-replaceable brand for astronomical filters in China. Optolong brand is also known as the comparable filters with international brand by distributor client around the world. Five bands bandpass filter L-PRO has gotten the most positive feedback from astronomy photographer, astronomy amateur. We also manufacture others filters like UHC, H-Beta, O-III, H-Alpha, SII, LRGB, Night Sky H-Alpha are also the. Check more info... [View More..]
Contact Us
FAQ (Frequently Asked Questions)Where is your company located?Optolong Optics Co .,Ltd is located in Yunnan in China. Visits are welcome by appointment. Please submit an inquiry through our contact page. What products do you mainly export?We mainly export Optical Coating Filters. Product availability and specifications may vary. For detailed information, please submit an inquiry. Can you handle shipping and customs?We assist with shipping (FOB, CIF, etc.) and provide guidance on customs clearance. Terms vary by destination. Please contact us for details. What payment terms do you accept?We accept T/T, L/C, and Western Union. Terms depend on order size and client agreement. For custom payment options, please contact us. Can I get samples before placing a bulk order?Yes, samples are available for quality evaluation. Fees and shipping may apply, refundable upon order confirmation. Please request samples here. How do you control quality?We maintain strict quality control, including inspections and testing. For certifications or QA details, please contact us. What is the usual lead time for orders?Lead times vary by product and quantity, typically 3 - 30 days. For accurate estimates, please contact us. Do you provide OEM or custom packaging?Yes, OEM and custom packaging are available. For MOQ and details, please contact us. Can I visit your company or have a video factory tour?Visitors are welcome by appointment, and video tours are available. Please schedule via our contact page. |
