Can we get your sample?

Of course. But I am sorry to say that you need to be charged with the freight and sample cost. After all, only a paid sample is valuable and precious.

Can I see your certification?

Of course. Because our certification is numerous, we can not display evey one, we will give you at any time when you ask for it.

Could I visit your factory or office?

Sure, just please tell us in advance, if our time is available, we can pick you up in case you don't know the road to our office or factory.

Commercial Door Closer/Heavy Duty Adjustable Grade One Standard Automatic Door Closer

Name: Commercial Door Closer/Heavy Duty Adjustable Grade One Standard Automatic Door Closer
Brand: Guangzhou Lockvel Security Technologies Co., Ltd.
SKU: 881631635

Guangdong, ChinaGuangzhou Lockvel Security Technologies Co., Ltd.

US$8.80-18.90

100 Sets

Sample price:US$22.00/set.Request sample

Product profile

Customization

Available

Material

Die-Cast Aluminum

Type

Outside-mounted

Model NO.

DC3100

Installation Type

Parallel and Standard

Function

Stop, Fixed, Delay, Adjustable, Back Check Function

Standard

American Standard

Remote Control

Without Remote Control

Door Width

1220mm

Door Weight

65~85Kg

Usage

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

Color

Silver

Weight

2.7kg

Payment

30%Deposit, 70% Balance

Max Opening Angel

180degree

Feature

Fire Rated

Certifcate

UL, ANSI A156.4 Grade 1

Mechanical Warranty

5years

Finish

Silver, Golden etc

Application

Subway Station, Fire Exit, Hospital

Spring Power Adjustment

Size1-5

Transport Package

Inner Box Bubble+Outer Carton Box

Specification

32cm*10cm*9cm

Trademark

LOCKVEL

Origin

Guangdong, China (Mainland)

HS Code

8302600000

Production Capacity

50000sets/Month

Key features

UL Listed & Grade 1 Certified: Meets ANSI A156.4 Grade 1 and UL standards for commercial fire-rated applications.

Heavy Duty Construction: Die-cast aluminum body with pressed steel arm, supporting doors up to 80kg.

5-Year Mechanical Warranty: Comprehensive 5-year warranty coverage for mechanical defects and performance.

Adjustable Functionality: Features adjustable closing/latching speed, back check, and delay action.

Wide Application Scope: Suitable for markets, hotels, offices, hospitals, schools, and fire exits.

Customizable Options: Offers custom finishes (Silver, Golden), spring power adjustment, and OEM/ODM services.

High Durability: Tested for 2,000,000 cycles to ensure long-term reliability and performance.

Professional Support: Expert team with 20 years experience providing quality assurance and credit transaction.

Company profile

High Repeat Buyers ChoiceSelf-branded

Guangzhou Lockvel Security Technologies Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2018-03-05Nearest Port: Guangzhou portAverage Response Time: ≤8.25hTerms of Payment: LC, T/T, Western Union, etc.International Commercial Terms(Incoterms): FOB, CIF, FAS, DDP, EXW, Others

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad customization and ODM/OEM capabilities, supported by product development activity and design tools. It reports production-related infrastructure, inventory capacity, valid contracts with associated subcontractors, and lead times within 15 working days in both peak and off-season periods. Quality assurance is reported, with two inspectors and several testing facilities; however, finished-product inspections and corrective/preventive actions lack written records. Innovation evidence is mixed: the supplier has developed new products and offers ODM services, but reports zero patents and no available SDK, while formal R&D audit documentation is unavailable. Export experience is established, but overseas service infrastructure is limited, with no overseas branches, agents, warehouse, showroom, or trade-show participation. Certification, after-sales service, and customer-case evidence are insufficiently documented.

Supplier typeThe supplier operates as a manufacturer offering OEM and ODM services, customization, inventory support, and export services. It has exported for six years, with exports representing 11%–20% of total sales, but has no overseas branches or agents.

After-Sales capabilityThe supplier has a clear customer-complaint handling procedure with followed records, which supports complaint-response capability. However, no broader after-sales service scope, overseas service network, branch, agent, warehouse, or showroom is reported.

R&D capabilityThe supplier reports new product development during the past year, ODM services, and R&D design using PS, AI, and CAD. Countervailing limitations include zero patents, no SDK, and no R&D design input, output, review, verification, or validation documents available for audit.

Production capacityProduction capability is supported by assembly and product-life testing equipment, a stated production base across several locations, inventory capacity, valid manufacturing contracts with associated subcontractors, and lead times within 15 working days in both peak and off-season. The inspection process has instructions but no written records, limiting process-documentation strength.

Customization capabilityThe supplier explicitly offers customization from samples and designs, full, minor, and flexible customization. Its R&D engineers develop products according to customer requirements, indicating broad customer-specific design support.

Product Q&A

Q:Are you a OEM or ODM company?

In a word, we specialize in devising, manufacturing and trading.

Q:Could we obtain your product in other place except in GuangZhou?

Of course, our distributors spread in every corner of China. Such as, Changsha, Kunming, Shanghai, Shenzhen etc.

Q:Have your company involved foreign trade before?

Sure, our products are highly appreciated in Europe, north American and southest Asian markets. Although our company are giving priority to domestic markets at present, oversea markets will be the focus of our work in near future.

Q:Why do I choose you?

Our company lay stress on the product quality contruction, moreover, mutal benefit and credit transaction is our company's core philosophy, furthermore, we have a series of professional certificate.

Q:How do your company manage your production site?

We strictly implement the 5S management (SEIRI, SEITON, SEISO, SETKETSU, SHTSUKE), which can improve product quality, reduce deffective rate efficiently.