Like Baoyou and Ergomax, Sihoo is from Guangdong, and their product designs are relatively similar due to factors such as industrial agglomeration. Although Sihoo's ergonomic seat classification is not detailed, there is no special series name, but the quality control is excellent, pay attention to safety design, the air pressure rods are from South Korea KGS and Taiwan WDF and other first-line suppliers, the seat base also has an explosion-proof thickened steel plate mechanism, even if the sudden air pressure rod explosion, it can also be effectively protected, and the Tiida and DuPont mesh used are also wear-resistant enough.
 
A7 and B7 belong to the same version of the seat, the former is the premium version, the latter is the standard version, the design obviously integrates the characteristics of the Ergonor and the Evolution of the Ergonor, there are the upper and lower backs of the Jinhao, and then the upper and left slices of the Evolution are replaced to the lower back, and the adjustment method is basically the same. The armrests of the A7 can be reclined in sync with the backrest, while the B7 cannot. The price difference between the two models is not big, and you can get it for about 3,000 yuan.
 
The latest seat V1 is even more noteworthy. The design of V1 is not like other similar products in China, giving up the separation design of the back, using a three-dimensional keel bracket, the overall curved backrest, which can be lifted and lowered separately, learning the design concept of foreign brands, and the waist support uses knobs, which can be adjusted asymmetrically on the left and right, and the support strength is significantly stronger than that of the double-back design. However, the sacrum part will be slightly empty and lack support due to the deep curve of the seat waist and the full back. However, it is rare to be able to jump out of the cookie-cutter design and seek innovation. The price of 1800-2000 yuan is also very cost-effective.