What warranty do you provide?

We provide 2-year warranty and lifetime maintenance for major accessories, and only charge cost fees

What payment terms do you accept for large orders?

Usually 30% T/T in advance, the balance is paid before shipment. We can also accept Western Union and PayPal for small payments.

Hidden Door Invisible 3D Adjustable Concealed Hinge for Folding Wooden Door

Name: Hidden Door Invisible 3D Adjustable Concealed Hinge for Folding Wooden Door
Brand: Zhongshan Blue Whale Hardware Products Co., Ltd
SKU: 2107536005

Guangdong, ChinaZhongshan Blue Whale Hardware Products Co., Ltd

US$2.00-4.00

1,000 Pieces

Sample price:US$4.00/piece.Request sample

Product profile

Customization

Available

Type

180°Hinge

Finish

Nickel Plated

Model NO.

BG003 BG004

Material

Zinc Alloy

Name

3D Adjustable Concealed Hinge

OEM & ODM

Available

Transport Package

Carton

Specification

Various

Trademark

Blue Whale

Origin

China

Key features

3D Adjustable Concealed Hinge: Invisible design for folding wooden doors with 180-degree opening capability.

Premium Zinc Alloy Material: Constructed from zinc alloy with nickel plating for rust and corrosion resistance.

Smooth Silent Operation: Ensures calm, noise-free opening and closing without sand holes on the surface.

OEM & ODM Services: Customization available for product name and design to meet specific market needs.

ANSI Certified Quality: Products comply with American National Standards Institute (ANSI) standards.

Versatile Application: Suitable for wooden doors, metal doors, and folding doors in various rooms.

Company profile

High Repeat Buyers ChoiceFast DeliveryFull CustomizationODM Services

Zhongshan Blue Whale Hardware Products Co., Ltd

Guangdong, China

Business Type: Manufacturer/FactoryAverage Response Time: ≤0.30h

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier specializing in door lock hardware, with stated distribution across China and exports to multiple global regions. It reports ISO 9000 and ISO 9001 certification, 100,000-piece annual lock productivity, customization from samples and designs, minor customization, and full customization. Quality assurance and raw-material traceability are stated, but finished-product inspection is performed by packing staff, and corrective-action procedures lack written records. The supplier has no overseas showrooms, agents or branches, or offline trade-show participation. Innovation evidence is limited: it provides ODM services but reported no new products in the past year and no SDK. Financial credibility cannot be established because the provided financial records show zero figures for the stated periods; no financial figures are reproduced here.

Supplier typeThe supplier explicitly identifies itself as a professional technical supplier and is described as a door lock hardware manufacturer/distributor with 16 years of craftsmanship, international service centers, and export coverage across numerous regions. Its stated product specialization and technical positioning support classification as a professional door-lock hardware supplier.

CertificationsThe supplier reports holding ISO 9000 and ISO 9001 certifications. These are explicit quality-management certification claims, although the provided slices do not include certificate numbers, validity dates, or issuing-body details.

Production capacityThe supplier states annual lock productivity of 100,000 pieces, a one-month average lead time in both peak and off-season, and proximity to Guangzhou/Shenzhen ports. It also reports quality assurance and raw-material traceability, but finished products are checked by packing staff and corrective/preventive procedures have no written records.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, minor customization, and full customization, and also provides ODM services. However, it does not provide 3D software design services, so the evidence supports broad physical/product customization rather than 3D design support.

Product Q&A

Q:Is your company a factory or a trading company?

Locstar is a smart lock manufacturer integrating R&D, production and sales. Main products: smart locks, hotel locks, digital door locks, fingerprint locks, Wifi locks.

Q:What is your production capacity?

We have 8 production lines with a monthly production capacity of about 50,000 pieces.

Q:What is your MOQ?

Our MOQ is 1 piece, and we always provide strong support to customers to meet their different needs.

Q:Can you help me design the product?

Of course, we are able to provide OEM/OEM services to our customers to get the best solution for their market.

Q:What is your delivery time for sample orders?

Sample order will be shipped within 7 days after payment confirmed. Bulk orders will be ready to ship in approximately one or two weeks.

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Hidden Door Invisible 3D Adjustable Concealed Hinge for Folding Wooden Door