Are samples available?

Yes, samples are available within 1-3 working days, but freight and sample costs apply.

What certifications do you have?

We have a series of professional certificates and can provide them upon request.

Concealed Invisible Adjustable 3 Way Continuous Door Hinge

Name: Concealed Invisible Adjustable 3 Way Continuous Door Hinge
Brand: Guangzhou Lockvel Security Technologies Co., Ltd.
SKU: 885590565

Guangdong, ChinaGuangzhou Lockvel Security Technologies Co., Ltd.

US$14.70

100 Pieces

Sample price:US$16.00/piece.Request sample

Product profile

Customization

Available

Type

180°Hinge

Finish

Dumb Silver

Model NO.

IVH-80-3D

Material

Zinc Alloy

Sample

1-3 Working Days

Max Door Weight

80kg

Min Door Thickness

40mm

Delivery Time

25-30days

Max Opening Angel

180 Degree

Transport Package

Inner Plastic Bag, Outer Carton Box

Specification

2pcs/color box

Trademark

LOCKVEL

Origin

Guangdong, China (Mainland)

HS Code

8302100000

Production Capacity

100000PCS/Month

Key features

High Load Capacity: Supports up to 80kg with 2 hinges or 100kg with 3 hinges.

Concealed Vandal Deterrent: Hidden installation design acts as a deterrent against vandalism.

Durable Zinc Alloy: Constructed from high-quality zinc alloy for long-lasting performance.

Wide Compatibility: Suitable for DIN left and right hand doors with screw fixing.

Fast Sample Delivery: Samples available within 1-3 working days for quick evaluation.

Professional Manufacturing: Strict 5S management ensures high quality and low defect rates.

Global Market Presence: Products appreciated in Europe, North America, and Southeast Asia.

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: ≤8.55hTerms 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.