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Executive Summary

Consumers looking to purchase furniture have various options, but buying a chair requires particular caution. Chairs are closely related to our health, making the right choice essential. This guide is designed to help you make optimal decisions by considering various factors and brand analyses when purchasing a chair. Topics covered include brand history, design, ergonomic features, materials and durability, suitability, second-hand market prices, alternative models, and a purchase checklist. This guide aims to encourage consumers to make better choices while also providing additional information through Google AdSense clicks.

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Brand/Line History & Chronology

One of the chair brands, Duoback, was established in 1999 and has been loved for various models ever since. Duoback particularly emphasizes ergonomic design and has continuously developed technology and design. The major model transitions are as follows:

– **1999**: Duoback established
– **2001**: First ergonomic chair launched
– **2010**: Launch of the DK series, Duoback’s main model
– **2018**: Launch of innovative designs incorporating the latest technology

In addition, various collaborative models have been released, and the brand has gradually established its presence in both domestic and international markets.

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Form & Design Analysis

Chair design is not only about form but also about elements that ensure user comfort. Notable design elements are summarized as follows:

– **Frame**: Various materials such as steel and aluminum are used, and durability must be considered.
– **Seat**: Made from foam memory or mesh materials, providing both seating comfort and breathability.

| Model | Frame Material | Seat | Special Features |
|——|————|——|———-|
| Duoback DK5000 | Aluminum | Mesh | Good breathability |
| Sidiz GX | Steel | Foam | Ergonomic design |
| Humanscale Aeri | Steel | Mesh | Attention to design |

– **Backrest**: Many models feature adjustable angles, allowing users to adjust their sitting posture as needed.
– **Finishing Details**: The finishing of the chair provides a more luxurious feel to the user, with various colors and designs available.

Ergonomics & Mechanisms

Ergonomic design is the most important element of a chair. Each model can be summarized by the following numbers:

– **Tilt Angle**: 90°~130°
– **Seat Depth Adjustment**: 40mm
– **Lumbar Support Height**: Adjustable by 50mm
– **Armrest Height**: Adjustable by 100mm

These elements can be adjusted to fit the individual body structure of users, providing comfort even during long hours of use.

Materials/Durability/After-Sales Service

One of the most important factors when purchasing a chair is the materials and durability. Duoback chairs are made from high-quality materials and come with a warranty period of 5 years for several years of use. Additionally, after-sales service is easily accessible, with service centers distributed nationwide. Consumables (such as cushions) can also be replaced at a low cost.

Fit Guide by Body Type

Setting the chair according to each individual’s body type is essential for maximizing comfort. The following are recommended settings based on body type:

| Body Type | Height/Weight | Recommended Seat Depth | Lumbar Support Setting |
|——|——–|—————-|—————–|
| Small | 150-160cm / 40-55kg | 280mm | Medium |
| Medium | 160-180cm / 55-75kg | 300mm | High |
| Large | 180cm or more / 75kg or more | 320mm | Maximum |

Suitable/Unsuitable for These People

– **Suitable**: Office workers who sit for long periods, people working from home who want a comfortable chair
– **Unsuitable**: People who need light mobility or those with excessive shoulder or neck pain should choose a suitable model.

Second-Hand & Resale Prices

The market prices for second-hand items vary by brand:
– Duoback: Approximately 30-50% resale value
– Sidiz: Approximately 40-60%
– Herman Miller: Generally high market prices…
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