I recently purchased a thermos from Yongkang Xinduo Cups in China and I must say, I am thoroughly impressed with the product! The quality of the thermos is top-notch and it keeps my drinks hot for hours. The customer service at the factory was exceptional and they were very helpful throughout the entire process. Shipping was also quick and efficient. I would highly recommend Yongkang Xinduo Cups for anyone in the market for a high-quality thermos.