{"id":1297,"date":"2024-04-23T13:53:00","date_gmt":"2024-04-23T05:53:00","guid":{"rendered":"https:\/\/www.sihoo.com\/en\/\/?post_type=products&#038;p=1297"},"modified":"2025-12-10T15:03:05","modified_gmt":"2025-12-10T07:03:05","slug":"m57c-ergonomic-office-chair","status":"publish","type":"products","link":"https:\/\/www.sihoo.com\/en\/products\/m57c-ergonomic-office-chair\/","title":{"rendered":"M57C"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>The M57C takes ergonomic to another level as the &#8220;hexagonal God of war.&#8221; It not only passed the BIFMA test but also boasts five original patented designs.<\/p>\n<p>The M57C features several upgrades, including a double-joint flexible headrest, a 4-position adjustable integrated backrest, height and horizontally adjustable lumbar support with high polymer elastomer, 4D linkage armrests, an Auto-balance mechanism with a 3-position lock, and a generous 130\u00b0 tilt-back angle.  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