China Middle Back PA Ergonomic Office Chair Comfortable Lumbar Support Black for sale

Middle Back PA Ergonomic Office Chair Comfortable Lumbar Support Black

Price Negotiable

Price: US$229~US$399

MOQ: 30PCS

Delivery Time: 15~40 working days

Brand: GTCHAIR

Product Description

GTCHAIR Middle Back Comfortable Lumbar Support Black PA Ergonomic Office Chair

Product Design Concept

1. ISEE Ergonomic Office Chair - BAS System (Back Automatic Supporting System)

Without any adjustment and operation, the independent rotation of chair back can be realized through the unique intelligent rotating elastic connection in the supporting frame of chair back. This system allows the chair back to fit people's weight, shape, sitting posture and tilting angle accordingly.

Realize the BAS system via the double torsion spring at the waist support bottom:

10 degree of upper torsion support & 15 degree automatic waist rotating

2. Smart Paddle Shift Wire Control Arms

-- The paddle under right armrest can adjust seat height within 8cm

-- The paddle under left armrest can adjust backrest tilt lock within 33 degree under 15 locked positions which beyond most chairs in the market.

Product Function & Materials

Headrest	Optional with 3D Support Headrest
Back Tilting	By the paddle on the left side of arm 15 locks within 33 degrees
Back Tilting Tension	Rotating the knob under right side of seat
Back Height	Adjustable
Seat Height	By the paddle on the right side of arm
Seat Depth	Adjustable
Arms	Arms height, angle adjustments Arms paddle shift control system
Lumbar Support	W/O
Outstanding Features	Double Back Support System
	GTCHAIR Paddle Shift Wire Control Arms System: control "seat height" & "back tilting" via the paddle on the arms, without bending waist

Materials:

Plastic Frame	Black PA engineering plastic + glass fiber 30%
Aluminum Part	ADC#12 polished / chromed strengthen aluminum
Back(Headrest) Cover	High elastic Korean Wintex Mesh GT series/ LP series/ CL series
Lumbar Support	BAS SYSTEM Lumbar Support
Seat	High elastic Korean Wintex Mesh GT series/ LP series/ CL series
Armrest	Paddle shift wire control, PA rngineering pastic frame + glass giber 30%, PU cover
Mechanism	60Si2Mn Double Spring Wire Control Mechanism, aluminum shell with texture baking finish, anti-corrosion and abrasion resistant
Gas Lift	Korea Samhongsa class IV, highest standard
Base	350mm ADC12# polished aluminum base with reinforce rib and noice reducing caps
Castors	65mm black PU casters