Sihao Office Chair

The Sihao office chair, also known as the Sihao ergonomic chair, is a product of Shenzhen Sihao Intelligent Furniture Co., Ltd. It covers multiple series and has many highlights in ergonomic design and market performance.

Founded in 2011, Sihao has three major product series: Doro, Vito, and Smart, covering the high-end to entry-level markets. There are several popular ergonomic chair models:

• Doro C300: It is rich in functions. The headrest can be adjusted up, down, forward, and backward. The 6D armrest can meet the needs of various usage scenarios. The seat can be adjusted forward and backward. The backrest has four levels of adjustment up and down and can recline and be fixed at 138°. It is also equipped with silent casters, and some models come with leg rests. However, this product also has some shortcomings. Some users have reported that although the lumbar support is soft, it protrudes, and the triangular area at the back is hollow with no support point. The Domino system does not slide smoothly, has a short stroke, and the support force cannot be adjusted in size, which can cause discomfort in the lower back after sitting for a long time.
• Doro C300 Pro V2: As a fully adaptive ergonomic chair, its lumbar support function has received positive feedback from users. It can better fit the curve of the human waist, provide effective support for the waist, and reduce fatigue from prolonged sitting.
• Doro S300: It adopts a split floating lumbar support, which can adapt to the body curve under the support of four groups of springs. When sitting upright, the support area is increased by 66.4%, and the lumbar pressure is reduced by 24%. It can effectively reduce the lumbar pressure caused by prolonged sitting and standardize the sitting posture, especially suitable for users with lumbar muscle strain.

Sihao has also made remarkable achievements in standard formulation. It has led the formulation of standards such as the Technical White Paper on Ergonomic Office Chairs, participated in the drafting of national standards GB/T 39223.3 - 2020 and GB/T 39223.4 - 2020, and, as the chairman unit of the Shenzhen Ergonomics Application Association, led the formulation of group standards such as the Requirements for Ergonomic Children's Study Desks and Chairs. In terms of market performance, from 2020 to 2022, Sihao has topped the sales rankings of computer chairs on Tmall and JD.com for three consecutive years, with its products covering more than 100 countries and regions around the world.