1. The customer provides the 3D light source assembly drawing of the product (STP format).
2. Our designers will make professional optical designs according to your light source and product layout.
3. After you confirm our design, please inform us of the required materials and types.
4. We will quote once we get your confirmation.
5. Note: Custo...
A:Buyers can get free samples through buyers' express account for freight collect, or transfer the delivery charge to us for prepaid at your convenience.For some expensive samples, samples cost could be necessary.