What is your after-sales service policy?

We offer a 1-year warranty. If defective products are found, please send pictures; if the issue is ours, we will send a replacement without extra fees.

Can I get free samples before ordering?

Yes, free samples are available for quality checking, but you need to pay for the express shipping cost. Delivery takes about 2-4 days.

What is the delivery time?

Our delivery time is usually 20-30 days after receiving the deposit.

Interior Modern Solid Tubular Lever Lock Set Zinc Alloy Door Handle Lock

Name: Interior Modern Solid Tubular Lever Lock Set Zinc Alloy Door Handle Lock
Brand: Guangzhou Longterm Technology Co.,Ltd.
SKU: 2152133045

Guangdong, ChinaGuangzhou Longterm Technology Co.,Ltd.

US$22.50

16 Sets

Sample price:US$27.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

LB-Z130588

Material

Zinc Alloy

Type

Key Lock

Style

Modern

Shape

Mortise Door Lock

Anti-theft Standard

Part

Door Handles with Lock

Door Thickness Fits

35-50mm

Lock Cylinder Length

75mm

Usage

Household Door Locks, Bedroom, Office, Hotel

Delivery Detail

25-35days After The Deposit

Samples

Reasonable Quantity Samples Are Free on Request

Supply Ability

100000 PCS Daily Output

Logo

Longterm or OEM

Sevice

24 Hours Response

Transport Package

EPE Bag+Poly Bag+Inner Box+Master Carton

Specification

7255/8545

Trademark

LONGTERM

Origin

Guangdong, China

HS Code

8302420000

Production Capacity

100000 Pieces Per Day

Key features

Durable Zinc Alloy Material: Constructed from high-quality zinc alloy with anti-rust and durable features.

OEM/ODM Customization: Supports custom designs and logos via OEM/ODM services since 2007.

Versatile Usage Scenarios: Suitable for household doors, bedrooms, offices, and hotels.

Secure Mortise Lock Type: Modern mortise door lock with B anti-theft standard and key lock type.

Flexible Sample Policy: Free samples available for quality check; buyer pays express cost.

Professional Quality Control: 100% inspection on every process including die-casting and polishing.

Reliable After-Sales Support: 1-year warranty with free replacement for defective products.

Fast Response Service: 24-hour response time for inquiries and technical support.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceQuality AssuranceR&D Capabilities

Guangzhou Longterm Technology Co.,Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 13 years CertifiedNearest Port: Guangzhou PortAverage Response Time: ≤6.69h

AI-Powered supplier vetting

SummaryThe supplier is a Foshan-based hardware manufacturer with a production base exceeding 20,000 square meters, nine stated workshops, four production lines, and listed output across hinges, handles, locks, and smart locks. It supports customization from samples and designs and reports established export activity, with 71%–90% of sales from exports and 13 years of exporting. However, it reports no private-mold R&D, no 3D software design service, no SDK availability, and only one year of total R&D engineer experience. Certification management is weak because supplier-management-system certification is listed as NIL. Service controls are mixed: written procedures and records exist for service assessment, but there is no approved-supplier list and no written corrective-action or complaint-handling procedures. Financial evidence is limited to year labels without performance metrics. Customer cases are not provided.

Supplier typeThe supplier identifies itself as GUANGDONG HYH HARDWARE INDUSTRIAL Co., Ltd., operates from Foshan, China, and describes a factory with more than 20,000 square meters, nine workshops, and hardware manufacturing equipment. Its listed products and facilities support classification as a hardware manufacturer rather than a purely trading or service company.

CertificationsThe supplier-management-system certification field is explicitly listed as “NIL.” No other certification evidence is provided in the supplied slices, so the available evidence indicates a certification shortfall for this field.

After-Sales capabilityThe supplier has written procedures and followed records for assessing service capability, and it offers defined quotation and payment terms with a stated one-month lead time in both peak and off-season periods. However, it has no written corrective/preventive-action procedures or records and no written customer-complaint-handling procedures, which directly weakens after-sales governance.

R&D capabilityThe company description states that it has an R&D department for novel and popular designs, but the detailed capability data reports no private-mold R&D, no professional-technical-supplier capability, no 3D software design service, no SDK availability, and only one year of total R&D engineer experience. These explicit limitations outweigh the general statement about having an R&D department.

Production capacityThe supplier reports four production lines, nine workshops, integrated manufacturing equipment, and output covering multiple hardware categories, including 6,000,000 door hinges, 2,000,000 cabinet handles and knobs, 600,000 door-lock sets, 120,000 smart locks, and 6,000,000 cabinet hinges. Finished-product inspection instructions are uniformly followed, but the factory does not continuously reconcile quantities for each batch or production lot.

Customization capabilityThe supplier explicitly offers customization from samples and customization from designs. This directly supports product customization, although the supplier separately states that it does not provide 3D software design services and has no private molds.

Product Q&A

Q:Are you a factory or trading company?

We are a professional manufacturer, GUANGZHOU LONGTERM HARDWARE CO., LTD., a subsidiary of HYH group, specializing in high-quality hardware accessories.

Q:Where is your factory located?

Our factory is located in Foshan, established in 1992, with a 20,000m2 production base and over 100 employees, just 30 minutes from Guangzhou CBD and airport.

Q:Can you produce handles according to customer designs?

Yes, we have supported OEM and ODM business since 2007. Please provide samples or 3D drawings, and we will check the best prices for you.

Q:How do you handle quality control?

We have staff checking every process like die-casting, polishing, and electroplating. Each product is inspected before packing by our QC staff.

Q:What is your packing method?

Products are packed with multi-layers: EPE bag, thick poly bag, hardboard inner box, and 5-layer master carton. Pallets are available upon request with additional charges.