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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)1. Where is your company located?Optolong Optics Co .,Ltd is located in Yunnan in China. We welcome inquiries and visits by appointment. For further details or scheduling, please through the contact us page submit the form to contact us. 2. What products do you mainly export?Our main products are Optical Coating Filters. Product availability and specifications may vary. For the most accurate and up-to-date information, please through the contact us page submit the form to contact us. 3. Can you handle shipping and customs?We can assist with shipping arrangements including FOB, CIF, and other terms depending on your needs. Customs clearance varies by country and shipment. For specific shipping options and customs support, please through the contact us page submit the form to contact us. 4. What payment terms do you accept?Common payment terms include T/T (telegraphic transfer), L/C (letter of credit), and Western Union. Specific terms depend on the order size and client agreement. For tailored payment options, please through the contact us page submit the form to contact us. 5. Can I get samples before placing a bulk order?Yes, we usually provide samples for quality evaluation. Sample fees and shipping costs may apply, which can be deducted after order confirmation. Please through the contact us page submit the form to contact us to request samples and related terms. 6. How do you control quality?We have strict quality control procedures during production, including inspections and testing. For specific quality assurance details or certifications, please through the contact us page submit the form to contact us. 7. What is the usual lead time for orders?Lead time generally depends on the product type and order quantity, typically ranging from 3 to 30 days. For accurate lead times, please through the contact us page submit the form to contact us. 8. Do you provide OEM or custom packaging?Yes, we support OEM and custom packaging services according to customer requirements. For more details and MOQ, please through the contact us page submit the form to contact us. 9. Can I visit your company or have a video factory tour?Yes, visitors are welcome by appointment. We can also provide video tours for remote clients. For scheduling, please through the contact us page submit the form to contact us. |
