About SIHOO
SIHOO is an ergonomic furniture brand under Shenzhen SIHOO Intelligent Furniture Co., Ltd., founded in 2011. The 2013 launch of the M18 became one of the brand's best-selling models and helped establish SIHOO in the affordable ergonomic chair category, and the company expanded into European and US markets starting in 2018. The catalog today spans value mesh task chairs like the M18 through the flagship Doro series of premium ergonomic chairs.
SIHOO's chairs carry BIFMA, SGS, and TÜV certification, independent testing marks for frame strength and material safety rather than claims made by the brand itself. The Doro C300 Pro, a newer chair in the same family as the C300 we reviewed, was covered by tech outlet Neowin, which called it the Ikea of chairs for its mix of build quality and price. In our own testing, the Doro C300's dynamic lumbar mechanism held its adaptive flex through extended sitting rather than settling into a fixed curve, and the M18's 3-position recline lock and 3-year warranty outperformed most chairs we reviewed at its price tier.
Brand website: sihoo.com
What SIHOO makes
SIHOO's range runs wider than the products we review. The lines we know best from our own testing are marked with a star:
Doro flagship series
premium ergonomic chairs (C300, C300 Pro, S300) with dynamic lumbar and multi-axis armrests — featured on DeskRated
M-series value chairs
BIFMA-certified mesh chairs built for budget ergonomic use (M18 and related models) — featured on DeskRated
Gaming-crossover chairs
Doro S300 marketed for both office and gaming use with 6D armrests
Mid-back task chairs
entry-level mesh computer chairs
Why we recognized SIHOO
The DeskRated Top Brand recognition isn't paid for and can't be applied for. We award it to the brands whose products consistently stand out in our hands-on category reviews. SIHOO earned it on the strength of the products below, evaluated the same way every product on this site is: bought, used at a real desk, and judged on merit.
SIHOO products we rated highly
SIHOO Doro C300 Ergonomic Office Chair
Dynamic adaptive lumbar support flexes in response to movement rather than holding a fixed curve, closer to premium chair behavior at a fraction of the price. The 3D ultra-soft armrests adjust in height, width, depth, and pivot for a genuinely neutral wrist position, and dual SGS and TÜV certification backs the frame with a 5-year warranty, the longest coverage period among the chairs in our review.
Read the 7 Best Office Chairs of 2026 guide →
SIHOO M18 Ergonomic Office Chair with Adjustable Lumbar Support
BIFMA certification at this price point is a commercial-grade quality signal that most chairs in its tier don't carry, and a 3-position recline lock (108°, 118°, 128°) gives real postural variety between focused work and reading. A 3-year warranty is well beyond the 1-year or no-warranty terms common at this price, and the chair has built one of the largest verified review bases of any chair in our roundup.
Read the 7 Best Office Chairs of 2026 guide →What earned SIHOO the recognition
- Independent certification across the line: BIFMA, SGS, and TÜV testing on frame strength and material safety, not just brand claims.
- Dynamic lumbar engineering on the Doro series that flexes with the sitter's movement, a mechanism more commonly found on chairs several times the price.
- Warranty coverage that stands out at each price tier: 3 years on the M18 and up to 5 years on the Doro C300.
- Deep review history: the M18 alone has built one of the largest verified review bases of any chair in our office chair roundup.
- Third-party press attention for the Doro line, including coverage from tech outlet Neowin.