Office Chair Multiple Configurations

The configurations of office chairs vary depending on the series and functional requirements, mainly divided into three categories: the Double Trojan series, the TOAI Tactical Master Pro series, and the ergonomic standard configurations. Details are as follows:

The Double Trojan office chair series focuses on basic functions and is divided into three models:

1. Black model without footrest: It features a black leather contact surface with visible stitching for enhanced texture. It supports height adjustment and swivel functions, equipped with a reclining adjustable support frame, but lacks massage and footrest functions, suitable for office scenarios requiring simple sitting posture adjustments.
2. Amber model without footrest: It has a black leather surface paired with black five-star feet and wheels, supporting height adjustment and swivel. The adjustable armrests cater to different height needs. The backrest is marked with ventilation indications, and the seat cushion is made of perforated sponge material for enhanced breathability, suitable for long hours of office work.
3. Amber model with footrest: Designed for short naps, although specific configurations are not fully mentioned, it can be inferred that it may include a foldable footrest to provide leg support for brief rests, suitable for lunch breaks or short rests.

The TOAI Tactical Master Pro series centers on high-end ergonomics with more complex configurations:

1. Headrest: It adopts a 4D design, allowing the pillow surface to rotate at a wide angle. The rotation of the pillow shaft drives height adjustment and supports forward and backward adjustments to accommodate the head and neck support needs of different heights and sitting postures.
2. Backrest: It is equipped with a coat hanger and supports a wide range of height adjustments to meet the needs of users of different heights. The gliding function allows the backrest to move forward and backward, dynamically fitting the back curve and relieving prolonged sitting pressure.
3. Lumbar pillow: The support position remains relatively stable through gliding, while the support intensity can be adjusted to precisely fit the lumbar curve and reduce lumbar spine pressure.

The standard configurations of ergonomic computer chairs focus on standardized parameters, balancing comfort and versatility:

1. Seat height: Ranging from 450 to 550mm, the front edge of the seat is 30 to 50mm lower than the back of the knee, with a 25 to 50mm curve designed to reduce leg compression.
2. Seat width: Ordinary office chairs are wider than 380mm, armchair models are not less than 460mm, and sofas and other resting chairs range from 520 to 560mm, ensuring activity space for users of different body types.
3. Seat depth: The national standard is 400 to 440mm, while resting chairs can be increased to 480 to 600mm to accommodate different sitting postures.
4. Angle between seat and backrest: Resting chairs range from 19° to 20° or 98° to 112°, while working chairs range from 4° to 6°, balancing support and mobility needs.