Hardware Secrets tested Coolink Corator DS, a sandwich cooler with four heatpipes, two heatsinks and a 120-mm fan between them. A quote from the article:

This time we tested Corador DS CPU cooler from Coolink, which uses a "sandwich" design, with two tower heatsinks, four U-shaped heatpipes and one 120-mm fan. Check it out!

>> Coolink Corator DS CPU Cooler Review