What are the payment terms?

We accept LC, T/T, D/P, PayPal, and Western Union as payment terms.

What is the lead time for production?

The average lead time is within 15 workdays for both peak and off-season periods.

Why might communication fail or be poor?

Common causes include the protective ground wire being grounded in the middle, poor connections, or interference from electric motors due to insufficient cable shielding.

3 Frequencies Intercom Communication System

Name: 3 Frequencies Intercom Communication System
Brand: Shanghai Strong Engineering Construction Co., Ltd.
SKU: 824346515

Shanghai, ChinaShanghai Strong Engineering Construction Co., Ltd.

US$198.00-228.00

1 Piece

Product profile

Customization

Available

Usage

Construction Hoist

Information content

Voice

Model NO.

customizable

Certification

CE, ISO

Condition

New

Frequency

3 Kinds

Quantity

Depends on Floors

Transport Package

Carton Box

Specification

the phone is 200*120*50mm

Trademark

STRONG

Origin

Shanghai

HS Code

84313900

Production Capacity

30000 Pieces/Year

Key features

OSHA Recommended Safety: Industry standard for construction hoists, recommended by OSHA in USA, Canada, and Australia.

3 Frequency Options: Available in 250KHz, 741KHz, or 800KHz to prevent interference in dense construction areas.

No Radio License Needed: Uses protection loop line transmission without electromagnetic pollution, no RF application required.

Crystal Clear Audio: Designed for clear voice communication to enhance worker safety and emergency response times.

Emergency Alarm Function: Equipped with emergency alarm switches on all units for immediate worker-to-operator contact.

Weather Resistant Design: Heavy duty composite Nylon Plastic enclosure operates reliably in extreme weather conditions.

Safe 24V DC Operation: Powered by safe 24 volts DC with backup battery supply for continuous operation during power loss.

Customizable Frequency: Frequency is customizable with 3 kinds of options available to suit specific site requirements.

Company profile

Importers and ExportersYears of Export ExperienceSelf-brandedExhibition Experience

Shanghai Strong Engineering Construction Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 10 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤15h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryShanghai Strong Engineering Construction Co., Ltd. is a China-based trading company established in 2014, focused on lift accessories and related construction machinery, mechanical, electrical, and hardware products. The supplier reports five employees, overseas service limitations, no overseas warehouse, showroom, agent, or branch, and participation in bauma China. It offers customization from samples and designs but does not provide private mold development, 3D software design, ODM, OEM for popular brands, or SDK support. Product information indicates new products were developed during the past year. Service procedures and corrective-action records are documented, although the approved supplier list lacks signatures or dates. Audit information identifies TÜV Rheinland, but the evaluation result is recorded as 0 and the stated report validity ended on 2025-08-12. Production capacity, financial credibility, and customer case evidence remain insufficient for firm conclusions.

Supplier typeThe supplier is identified consistently as a trading company and limited company, with no larger-company group affiliation. Its stated scope covers lift accessories and a broad range of construction machinery, mechanical, electrical, metal, hardware, rubber and plastic, and automobile-related products.

After-Sales capabilityThe supplier reports written procedures and records for service-capability assessment, a corrective and preventive action mechanism, and ten qualified service-capability suppliers. It lacks overseas warehouses, showrooms, agents, and branches, although it has participated in bauma China and reports lead times within 15 workdays.

R&D capabilityThe supplier reports having launched new products during the past year, indicating some product-development activity. However, it does not offer ODM, private mold development, professional technical-supplier R&D, 3D software design, or SDK support.

Customization capabilityThe supplier explicitly offers customization from samples and designs. However, it does not provide private mold development or 3D software design services, so customization appears available in defined forms rather than as a full design-and-development service.