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Easy Installation Buffered Overhead Invisible Spring Door Closer for Fireproof Door

Name: Easy Installation Buffered Overhead Invisible Spring Door Closer for Fireproof Door
Brand: Wenzhou Liwang Hardware Technology Co., Ltd.
SKU: 2120251845

Zhejiang, ChinaWenzhou Liwang Hardware Technology Co., Ltd.

US$4.50-8.30

500 Pieces

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

24 Month

Warranty

1 Year

Model NO.

2025SL

Material

Aluminum Alloy

Type

Door Closer

Installation Type

Standard

Function

Stop, Fixed, Delay, Adjustable, Buffered

Standard

American Standard

Remote Control

Without Remote Control

Door Width

1200mm

Door Weight

25-120kg

Usage

Market, Fire Exits, Home, Hotel, Office, Hospital, School

Color

Silver

Name

Door Closer

Adjustable Closing Section

Two Speed (Closed-Door Segment, Locked Section )

Hold -Open

Optional (with Hold Open Slide Arm)

Sample

Available

Transport Package

Carton

Specification

233*60*42mm

Trademark

according to drawing

Origin

China

HS Code

8301400000

Production Capacity

200000pieces/Month

Key features

Two-Speed Adjustable Closing: Features two-speed valves for adjustable closing and latching speeds.

Buffered & Back Check: Includes back check valve and buffered function for smooth door operation.

Wide Weight Capacity: Suitable for doors weighing 25-120kg with width up to 1250mm.

Optional Hold-Open: Hold-open function is optional with the Hold Open Slide Arm.

Multiple Installation Types: Supports standard, frame, and concealed installation methods.

Smart Power Options: Supports DC24V power supply with automatic release on power failure.

CE & UL Certified: Products comply with international standards including CE, UL, and ANSI.

OEM & ODM Support: Professional OEM and ODM services available for custom branding.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Wenzhou Liwang Hardware Technology Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 3 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤4.24h

AI-Powered supplier vetting

SummaryThe supplier is a small limited company/trading company in Wenzhou, with 10 employees and a product scope covering door hardware. It reports manufacturing-related business activities, machinery facilities, OEM and ODM services, and broad customization capabilities. Export sales account for 71%–90% of total sales, but the supplier has exported for only three years and reports no overseas agents, branches, warehouses, showrooms, or countries with overseas service coverage. Quality assurance is stated to exist, while inspection, corrective-action, complaint-handling, and supplier-assessment procedures lack written records. Financial information is present for 2021–2023, but no financial performance figures are provided. The evidence supports customization and some production-related capabilities, while certification, after-sales service, innovation, and customer-case strength remain insufficiently documented.

After-Sales capabilityThe supplier has no overseas warehouse, showroom, overseas agents, or branches, and reports zero countries with overseas service coverage. Its complaint-handling and corrective/preventive-action mechanisms have no written procedures or records, indicating limited documented after-sales infrastructure.

R&D capabilityThe supplier reports no new products during the past year and no available SDK, which limits evidence of recent innovation. It does state that its business scope includes hardware-product R&D and technical development, but this does not establish strong or current innovation performance.

Production capacityThe supplier reports drilling and polishing machinery, in-stock capability, 40 qualified service suppliers, and peak/off-season lead times ranging from within 15 workdays to one month. However, it has no valid manufacturing-capacity contract with associated subcontractors and only one quality-control/quality-assurance inspector, so production capability is supported but operational controls are incomplete.

Customization capabilityThe supplier explicitly supports customization from samples and designs, full, minor, and flexible customization, and also offers ODM and OEM services, including OEM for popular brands. These statements provide direct evidence of broad customization capability.

Product Q&A

Q:What certificates do you have?

We have CE and UL certificates. All our product designs follow international standards such as EN/CE, UL, and ANSI.

Q:Do you accept OEM or ODM?

Yes, we are professional in OEM and ODM, cooperating with famous brands for these services.

Q:Do you have a quality system?

Yes, we have a well-established quality system that controls production quality according to instructions and requirements throughout mass production.

Q:Are you a factory or trading company?

We are an SGS Audit factory with over 10 years of manufacturing experience in architectural hardware.

Q:What are your payment terms?

Our payment terms include T/T and L/C.