king size spring mattress-cheap pocket sprung mattress double-king size foam mattress has created considerable benefits for Synwin Global Co.,Ltd and its customers. The outstanding feature of this product lies in high performance. Although it is superior in materials and complicated in process, direct marketing reduces the price and makes the cost even lower. Therefore, it is highly competitive in the market and gets more popular for its superior performance and lower cost.. In recent years, Synwin has become more active in the international market due to our determination and devotion. In view of the analysis of products sales data, it is not difficult to find that the sales volume is growing positively and steadily. At present, we exported our products all over the world and there is a trend that they will occupy a larger market share in the near future.. king size spring mattress-cheap pocket sprung mattress double-king size foam mattress will become a demand in the market. Thus, we are keeping pace with it to offer more appropriate choices at Synwin Mattress for customers around the world. Sample delivery service is provided before bulk order to deliver a functional experience..