Factory: 1. We have a factory and competitive prices,And the quantity is more favorable. 2. There are other advantageous products as well,And high-end customized products. Contact information: Vertin： Telegram/Signal：+85366856861 Threema：MNH6S7WY   Frequently asked questions： 1. Can I obtain some samples? Yes, we can provide free samples, but the shipping cost will be paid by our customers. 2. What payment terms do you accept? Payment methods such as Bitcoin, UsdtETHCash, etc. 3. How about after-sales service? We will provide high-quality products and ensure 100% safe delivery. 4. Do you test all the goods before delivery? Yes, we have 100% testing before delivery.