Model: SG-630

Prodcut Category: Office Work Space

Surface Recommendation: Hard floor, Carpet floor.

Adjustment Lumbar Support Office Chair with 7D Armrest

MOQ: 50 sets

Supply Capacity: 8000 sets per month

Delivery Time: 7-30 days depends on the order quantity.

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Product Description

An upgraded, market-tested version of our SG-620(DLS-T9), the SG-630 is designed for your product lineup:

A forward-adjustable dual lumbar support to hit the key “lower back” pain point. Plus patented armrests that stand out in a sea of copycat mesh chairs. Available in black and gray, it’s built for taller users in the $155$ – $190 cm$ range.

With flexible configurations across armrests, seat cushion, tilt mechanism, and 5-star base, you can easily create different price tiers and channel-specific models.

Product Specifications

Model	SG-630
Frame material	Reinforced PA & GF Frame
Backrest material	Specialty mesh fabric
Maximum load	140 kg
Height Adjustment	8 or 10 cm
Floor to seatbase	45-52 cm
Base Diamenter	70 cm

Product Configuration Scheme

Seat Options
Armrest Options
Tilt Choice
Metal Chair base choice

Seat Cushion Configuration Solutions

The seat frame comes in a roomy $510 mm(width) \times 500 mm(depth)$ . P.S: the mesh version offering $5 cm$ of seat-depth adjustment (the sponge seat frame does not).

Mesh Seat

TPEE elastic mesh seat. High-resilience, breathable, and medium-firm. Perfect for hotter regions, sweat-prone users, and medium-weight customers.

Sponge Seat

A contoured molded foam core (8.5cm thickness) wrapped in 3D polyester fabric for a softer, more cushioned sit.

Great for users who love a plush feel—especially lighter-weight customers or those over $100 kg.$

Armrest Configuration Solutions

The armrest system starts with a solid base: nylon support frame plus a soft polyurethane pad. At 26 cm long with a wide 9 cm front and 8 cm rear, it gives customers real forearm parking space.

4D armrest

The standard choice—public mold armrest:

8 cm height range, 4 cm front–back slide, 360° arm pad rotation, and a 45° flip-up so the chair tucks under desks and syncs smoothly with recline.

7D armrest

Pro verssion armrest, everything the 4D does, plus dual-axis 360° rotation and a 15° tilt-up on the pad, unlocking more arm support angles, more usage scenarios.

Builting with our own proprietary mold result a clear visual over lookalike competitors.

Tilt mechanism solutions

For tilt mechanism, you’ve got two flavors—both with $3$ recline lock positions (up to $13 5^{\circ}$ ) and easy height adjustment.

Standard center tilt

Lets users fine-tune recline tension manually with a knob under the seat—simple, reliable, and familiar.

Weight-sensitive tilt

it automatically adjusts back tension based on the user’s body weight, so the recline feels natural and balanced without constant fiddling.

Metal 5 star base solutions

The metal 5‑star base with a $700 mm$ diameter—wide, stable, and built to last. The aluminum alloy base sits about $4 cm$ lower than the steel one。

Galvanized Steel Base

Detachable, electroplated, and seriously practical. The split design saves packing space, while a decorative cap hides the welds so it looks clean.

Aluminum Alloy Base

One-piece cast aluminum base with a polished finish look. Lighter feel, same rock-solid stability.

Why Choose SG-630Lumbar Support Office Chair with 7D Armrest

Patented Molds, Not Public Models
We use our own patented molds, so your chair doesn’t look like everyone else’s—it looks like yours.

Real Ergonomics, Especially for the Lower Back
Dynamic lumbar support and smart adjustability mean the chair actually follows the spine.

Up to 32 Configurations
Flexible colors and rich component options give you up to $32$ combinations—easy to tailor for different markets.

3-Year Warranty
A solid $3$ ‑year warranty keeps your customers confident and your after-sales headaches to a minimum.

Ready-Made Photos & Videos
We deliver not just the chair, but polished catalogs and video assets so you can start promoting on day one

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Features

3D headrest

A $36 cm$ wide curved headrest slides $8 cm$ up and down the rail, with dual-axis angle adjustment and extra in–out travel so different users get dialed.

Mesh Backrest

High-elastic mesh with upper and lower zones: firm upper back support plus a dual split pads lumbar area.

The whole back + lumbar moves together across $4$ height steps, giving $5 cm$ of backrest adjustment to fit different body heights.

Adaptive Lumbar

Two independent, spring-loaded lumbar pads wrap the lower back with a large curved contact area.

The combo of adaptive spring tension and deformable mesh gives responsive support.

Compared to the SG-620, we’ve added a $3$ ‑position support rod to adjust the lumbar angle and force, effectively giving you about $3 cm$ of extra horizontal tuning space.