Zf B31 Modern Ergonomic Office Chair for Remote Work and Study Comfort

• Customization: Available
• Style: Modern
• Material: Mesh
• Model NO.: B31
• Rotary: Rotary
• Armrest: With Armrest
• Folded: Unfolded
• Customized: Customized
• Condition: Used
• Overall Height: 116-138 Cm
• Seat Height: 46-55 Cm
• Backrest Design: Ergonomic, Multi-Point Support
• Lumbar Support: 2D Adjustable
• Gas Lift: Class 3 BIFMA
• Swivel Function: 360° Swivel
• Backrest Material: High Elasticity Mesh
• Seat Material: Injection Molded Foam
• Armrest Material: PU Padded Nylon
• Caster Material: PU Casters
• Certificate: CE/BIFMA/ISO9001
• Suitable Scenarios: Office, Home Study, Gaming Room, Conference Room
• Transport Package: 1PCS/CTN
• Specification: 75*38*64
• Trademark: ZHONGFA/OEM
• Origin: China
• HS Code: 9401300000
• Production Capacity: 700000PCS/Year
• Package Size: 75.00cm * 38.00cm * 64.00cm
• Package Gross Weight: 25.000kg
• Lead Time: 7 days (1 - 100 Pieces) ; 10 days (101 - 300 Pieces) ; 15 days (301 - 500 Pieces) ; To be negotiated ( > 500 Pieces)

Product Description

Product Description

Ergonomic Mesh Office Chair B31 – All-Day Comfort & Lumbar Support

Office workers, gamers, remote professionals, and anyone seeking affordable ergonomic seating.

Specification

Model:	B31	Overall Height:	116 - 138 cm
Headrest:	2D Adjustable Headrest	Armrest:	3D Nylon Armrest
Mechanism:	Multi-angle tilt with tension control	Base:	350mm Aluminum
Gas Lift:	Class 3 / BIFMA Certified	Caster:	60mm PU Caster
Swivel:	360°	Product Weight:	22 KG
General:	Whole Chair BIFMA standards	Shipping Weight:	25 KG
Logo:	Customizable	Plastic Seat Cover:	Have
Maximum Load Capacity:	150 KG / 330 lbs	Assembly:	Required, tools included

Packing & Delivery

Company Profile

Certifications

FAQ

Frequently Asked Questions

Q1: How are the armrests adjustable?
A1: Our 3D armrests adjust in three ways: Up/Down (~12cm range).  Forward/Backward (~5cm range). Pivot Left/Right (~34-degree angle). You can unlock all dimensions to find the perfect elbow support.

Q2: How does the recline function work? Will it tip over?
A2: There are typically two levers on the right side: one for height adjustment and another for recline control. The recline function allows you to lock at any angle or adjust the tilt tension with a knob to match your weight. It is designed to be safe and will not tip over suddenly.

Q3: Is the mesh durable? Will it sag over time?
A3: We use high-elasticity, high-strength Tesla mesh that undergoes rigorous durability testing. It is highly resistant to stretching and sagging, providing firm support for a long time.

Q4: What is the seat cushion made of? Will it flatten out?
A4: The seat is made of one-piece injected molded high-resilience foam, not low-quality recycled foam. This material is high-density and has excellent rebound, ensuring it maintains its shape and provides even pressure distribution for long-term comfort.

Q5: Is the gas lift safe?
A5: Safety is our top priority. The chair is equipped with a BIFMA/SGS certified Class-3 gas lift, which has passed rigorous explosion-proof tests. It is completely safe to use.

Q6: What is your warranty policy?
A6: We offer 5-year warranty on the frame, 3-year on the gas lift, and 2-year on components. During the warranty period, we will replace or repair any non-man-made defects free of charge.