STS is an escrow service that protects both buyers and suppliers. Funds are held securely by Made-in-China.com until order terms (e.g., delivery, quality) are fulfilled
| Customization: | Available |
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| After-sales Service: | Repair for free |
| Warranty: | 1 year |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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Payment Guarantee
Platform-protected payments with refund support for eligible order issues.
Platform Logistics
Inspection Service
After-Sales & Dispute Handling
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
| Material | Sapphire, optical glass, fused silica, etc |
| Diameter | >0.3mm |
| Dimension tolerance | Micron-level |
| Parallelism | <0.2arcmin generally |
| Centering error | <10arcsec |
| Flatness | PV<1/10L@633nm |
| Surface quality | S-D 10-5 under 20x magnifier and cold light |
| Coating | As per specified requirements |
Packaging&Shipping
Package detail:
Optics are packed with Capacitor paper, white paper, custom-made plastic containers etc
Customized safety green carton
Shipping term:
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