What is the minimum order quantity?

The minimum order quantity is 1 piece.

Do you provide quality inspection?

Yes, we perform 100% visual and function inspection before shipment and provide photos for customer confirmation.

What is the maximum sewing speed?

The maximum sewing speed is 4500 S.P.M.

Sk R9-4D Direct Drive 4-Thread High Speed Overlock Sewing Machine Serger

Name: Sk R9-4D Direct Drive 4-Thread High Speed Overlock Sewing Machine Serger
Brand: TAIZHOU SEWKEY GARMENTS MACHINERY CO.,LTD.
SKU: 2128337422

Zhejiang, ChinaTAIZHOU SEWKEY GARMENTS MACHINERY CO.,LTD.

US$320.00-350.00

5 Sets

Product profile

After-sales Service

Video Technical Support

Warranty

One Year

Condition

New

Model NO.

SK R9-4D

Certification

ISO9001

Application Place

Factory

Applicable Thickness

Middle Thickness Material

Drive

Electric

Thread Number

Four Threads

Needle Number

Double Needles

Stitch Type

Lock Type

Type

Garments

Suitable for

Using in Factory

Max. Speed

6000 Rpm

Color

Can Be Customized

G.W

38kg

Transport Package

Carton

Specification

470*365*500mm

Trademark

SEWKEY

Origin

Taizhou China

HS Code

8452290000

Production Capacity

2000pieces/Month

Key features

High-Speed Performance: Max sewing speed reaches 4500 S.P.M with stable computerized control.

Customizable Color: Color can be customized to meet specific brand or design requirements.

Versatile Fabric Handling: Suitable for T-shirts, denim, leather, and blended fabrics with thickness 0.3-1.8mm.

Efficiency Boost: Improves production efficiency by over 30% with low error rate and smooth operation.

Adjustable Stitch Settings: Features adjustable stitch length (0.5-5mm) and pressure foot for diverse needs.

Durable Construction: High-quality needle and thread take-up mechanism ensures strong, neat stitches.

Comprehensive Warranty: 1 year for mechanical parts and 1-3 years for electronic components like motors.

Fast Response Support: Inquiries regarding products or prices are replied to within 48 hours.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceSelf-branded100% Finished Products Inspection

TAIZHOU SEWKEY GARMENTS MACHINERY CO.,LTD.

Zhejiang, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 16 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤3.91h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is a limited company offering sewing machines and related mechanical and hardware products, with SEWKEY identified as its own brand. It reports established quality-control procedures, finished-product inspection instructions, corrective and preventive action records, and complaint-handling procedures. The supplier claims strong manufacturing and management systems, but the provided data does not independently verify production scale or certifications. Customization is available across several models, including sample, design, full, minor, and flexible customization. However, no new products were developed in the past year, and the supplier does not provide ODM, SDK, or popular-brand OEM services. Export activity is substantial at 90% of sales, with 16 years of export experience, but there are no overseas agents, branches, warehouses, showrooms, or stated overseas-service countries. Financial records are indicated for 2022–2024, but no financial results are provided.

Supplier typeThe supplier is identified as a limited company whose stated product scope includes sewing machines, while its business scope also covers mechanical equipment, hardware, and certain medical-device sales. SEWKEY is presented as its own brand, indicating a branded product supplier rather than only an intermediary.

After-Sales capabilityThe supplier reports a complete after-sales service system, documented corrective and preventive actions, and a documented customer-complaint procedure with records. However, it has no overseas agents or branches, no overseas warehouse or showroom, and reports zero countries with overseas services, limiting demonstrated local overseas support.

R&D capabilityThe supplier states that it introduced no new products during the past year, provides no ODM service, and has no available SDK. It does use ERP and reports OA, CRM, and SAP systems, but these support management digitization rather than proving product innovation.

Production capacityThe supplier reports advanced equipment, skilled workers, a high-efficiency production and management system, documented finished-product inspection, and quality-control assurance. It has no in-stock capability, while the status of outsourcing procedures and manufacturing contracts is unknown; production capability is therefore supported but not fully verified in scale or supply flexibility.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. These repeated descriptions provide direct evidence of broad customization capability, although they do not specify technical limits, tooling, or development timelines.