Shen Xiangdong invents patented high-low pillow.

Shen Xiangdong invented the patented high-low pillow in 2004 with the patent number ZL200420028890.9, and later developed the high-low pillow products according to his patent. The high and low pillows are developed according to the national standard GB 10000—88-88 "Adult Body Shape in China" by using the principle of ergonomics, and there are two kinds of high and low pillows suitable for sleeping on one's side and supine. There are a series of specifications of high and low pillows for people to choose a pillow with a reasonable height suitable for their supine side. The high-low pillow overcomes the defects of the commonly used "flat pillow" and brings comfort and health to people.