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The warranty for SIHOO products varies depending on the product and the part. According to the After sales Policy, SIHOO warrants that each SIHOO product that you purchase will be free from material and workmanship defects under normal use during the warranty period. The warranty period for a product starts on the day such product is delivered, unless otherwise agreed upon between you and SIHOO. You can contact SIHOO through after-sales service and let them know what they can do for you. For quality-related warranty claims, items will be replaced with a factory refurbished model of equal value when available, otherwise a new item will be sent.

You can assemble your SIHOO chair by following the instruction manual that comes with the product. You can also watch some video tutorials on YouTube that show you how to assemble different models of SIHOO chairs. For example, you can watch the Ergonomic M18 Office Chair Assembly Guide or the Sihoo V1 Ergonomic Office Chair Assembly Guide. You can also visit the SIHOO website to find more installation tutorials for various products.

The return policy of SIHOO depends on the condition of the product and the reason for the return. According to the Refund Policy, you can return or refund the product within up to 30 days of receipt. The product you return must be in the same condition as when you received it and in its original packaging. Please keep the receipt. Refunds will be processed within 7 working days of receipt and confirmation of returns. Please check your account. If you receive a damaged, defective, or incorrect item or if you are not completely satisfied with your purchase, please contact the support team within 3 days of receiving. Returns must be received in original condition within 30 days of receipt or date of purchase, whichever is overdue, shipping and delivery charges are non-refundable.

The M18 Classic Office Chair with Triple Spinal Relief is one of the most popular ergonomic office chairs from SIHOO. It features a w-shaped cushion, a breathable mesh seatback, dual-adjustable lumbar support, and more. It is designed to provide you with a comfortable, sensible, and scientifically healthy sitting experience. It also has a reclining function that allows you to lounge in comfort up to 126 degrees. It has a headrest that moves up and down and pivots to fit the curvature of your neck and support your head. It also has height-adjustable armrests that suit your needs. You can find more information about this product on the SIHOO website.

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