ADAMAS

What ADAMAS does

ADAMAS (合同会社ADAMAS) is a privately held Japanese limited liability company founded on March 18, 2022 by Representative Director Kurozaki Takuro, headquartered in Arakawa Ward, Tokyo. The company provides mobile phone base station construction, telecommunications infrastructure, and electrical construction services, primarily serving the four major Japanese mobile network operators (NTT Docomo, KDDI/au, SoftBank, and Rakuten Mobile) as well as tower companies (WCP, J-Tower). Its service portfolio spans the full base station lifecycle — on-site surveys, new construction, maintenance, expansion, and decommissioning — alongside building server room and data center infrastructure (rack mounting, access point installation, LAN and optical cabling), office and retail electrical work (lighting, OA floor outlets, distribution panels), and specialized high-altitude tasks such as aircraft warning light replacement.

The company operates with 6 full-time employees plus a network of approximately 10 contractor and partner companies, organized around direct-to-site field operations concentrated in the Greater Tokyo region (Tokyo, Saitama, Kanagawa, Chiba) with occasional work in more distant prefectures such as Aomori. Technology positioning centers on IT/ICT-enhanced operational workflows that the company claims deliver lower-cost, higher-quality base station construction compared to traditional contractors, though no proprietary AI/ML systems, APIs, or patents are disclosed. Revenue is generated on a project-based, per-contract basis negotiated directly with enterprise B2B clients, supplemented by adjacent service lines recently launched in solar panel installation, surveillance camera deployment, event temporary base stations, and satellite parabolic antenna installation/repair for emergency communications.

Growth has been project-count-led: base station projects rose from approximately 29 in 2022 to approximately 41 in 2023, while electrical and telecommunications projects grew from 8 to 13 over the same period. The company is actively recruiting and claims consistent annual revenue growth in its fourth operating year, though no revenue figures, external funding, or institutional ownership have been disclosed.

Name

ADAMAS

Legal name

合同会社ADAMAS

Website

https://adamas.llc

Company type

Private

Founded year

2022

Operating status

Operating

Short description

ADAMAS is a Tokyo-based Japanese LLC founded in 2022 that provides mobile base station construction, telecommunications infrastructure, and electrical construction services to all major Japanese mobile carriers and tower companies, operating with 6 full-time employees and a partner network across the Greater Tokyo region.

Ownership category

akta.pro rank

Product category

Mobile Telecommunications Infrastructure Construction

NAICS

Power and Communication Line and Related Structures Construction (237130)

akta.pro primary industry

Tower Operations & Maintenance (Field Services) (HDAIAKAF)

Keywords

• Mobile base station construction
• Telecommunications infrastructure
• Electrical construction services
• High-altitude maintenance work
• Data center cabling

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Mobile Base Station Construction: Project-based revenue from comprehensive base station construction services including on-site surveys, new installations, maintenance, upgrades, and decommissioning across all mobile carriers (full carrier coverage). Revenue is generated on a per-project basis.
2. Telecommunications Infrastructure Work: Project-based revenue from building server room installations, rack equipment mounting, access point installation, LAN and optical cable deployment and termination, and related data center infrastructure construction.
3. Electrical Construction: Project-based revenue from office and store lighting installations, OA floor outlet work, distribution panel work, and cable routing for commercial and office tenants.
4. Special High-Altitude Work: Revenue from specialized high-altitude tasks such as aircraft warning light bulb replacement and other elevated maintenance services on towers and structures.
5. Solar Panel Installation: Revenue from solar panel installation work for residential and commercial customers, expanding the company's service portfolio beyond telecommunications.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels2 records

Core offering

ADAMAS provides end-to-end mobile phone base station construction services for all major Japanese carriers, covering on-site surveys, new installations, maintenance, upgrades, and decommissioning. The company complements this core service with telecommunications construction (server rooms, rack mounting, LAN and optical cabling), electrical construction (office/retail lighting, OA floor outlets, distribution panels), special high-altitude work (aircraft warning lights, tower maintenance), surveillance camera setup, solar panel installation, event-driven temporary base stations, and satellite parabolic antenna installation for emergency communications.

Product overview

ADAMAS is a construction services company (合同会社) that provides a unified portfolio of infrastructure installation and maintenance services, primarily focused on mobile phone base station construction. The core offerings include four main service lines: (1) Mobile Phone Base Station Construction covering the full lifecycle from site surveys to new installations, maintenance, expansion, and removal across all Japanese carriers; (2) Telecommunications Construction for data center and building server infrastructure; (3) Electrical Construction for office and retail lighting and power systems; and (4) Special High-Rise Work for aviation safety equipment. These are complemented by specialized services for surveillance cameras, solar panels, event-based temporary base stations, and satellite communication systems. The company operates as a service provider rather than a software product company, with no API or AI-driven product offerings.

Differentiator

Problem solved

Functional benefit

Products and services

• Mobile Phone Base Station Construction (携帯基地局工事) End-to-end mobile phone base station construction services including on-site surveys, new installations, maintenance, expansions, and decommissioning (removal) for all major Japanese mobile carriers (NTT Docomo, KDDI/au, SoftBank, Rakuten Mobile) and tower companies. Targeted at mobile network operators and tower companies needing nationwide base station deployment and lifecycle maintenance.
• Telecommunications Construction (電気通信工事) Building and data center telecommunications infrastructure services including server room installation, rack equipment mounting, access point installation, LAN and optical cable laying and termination. Serves commercial building owners and data center operators.
• Electrical Construction (電気工事) Office and retail electrical installation services including lighting equipment installation, OA floor outlet work, distribution panel work, and cable routing for commercial and office tenants.
• Special High-Altitude Work (特殊高所作業) Specialized elevated work services on towers and structures including aircraft warning light bulb replacement and other high-altitude maintenance operations, delivered by staff holding work-at-height and aerial work platform certifications.
• Surveillance Camera Installation (監視カメラ設置) Installation of surveillance cameras, including high-performance 360-degree cameras with voice-activated video search capabilities. Targeted at commercial properties and homeowners.
• Solar Panel Installation (太陽光パネル設置) Solar panel installation services for residential and commercial properties, delivering demand-driven renewable energy deployment.
• Event Temporary Base Station Setup (イベント臨時基地局設営) Temporary mobile base station setup for large public events such as firework festivals, providing surge wireless communication capacity to event organizers and mobile carriers.
• Satellite Parabolic Antenna Installation and Repair (衛星パラボラアンテナ設置・修理) Installation and repair of satellite parabolic antennas used as emergency communication infrastructure during disasters or other fiber optic cable outages, for government agencies, event organizers, and telecom carriers.

Named customers5 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Others

• J-Tower Inc. Japan's leading shared telecom tower operator/owner and infrastructure provider; an ADAMAS customer (J-Tower project in 2023) but also an ecosystem participant in the same mobile base station value chain, making it an adjacent peer rather than a direct competitor.

Direct peers

• Kyudenko Corporation: Kyushu-headquartered electrical and telecommunications infrastructure construction firm with nationwide carrier base station, electrical, and IT infrastructure work; directly comparable service mix to ADAMAS.
• Kinden Corporation: Major Japanese electrical and telecommunications infrastructure construction contractor serving carriers, data centers, and commercial clients. Direct competitor to ADAMAS across telecom and electrical construction services.
• Kandenko Co., Ltd. Large Japanese electrical and telecommunications construction company that builds and maintains mobile base stations, optical networks, and electrical infrastructure for carriers and enterprises — same core service lines as ADAMAS at much larger scale.
• Yurtec Corporation: Japanese electrical and telecommunications infrastructure construction firm with strong presence in Tohoku, performing mobile base station, electrical, and telecom work for carriers and enterprises — comparable offering to ADAMAS, with regional rather than Kanto concentration.
• Exeo Group, Inc. One of Japan's largest telecom and electrical infrastructure construction contractors (formerly Kyowa Exeo), directly comparable to ADAMAS in mobile base station construction, telecom infrastructure, and electrical work for carriers and enterprise clients, but at vastly greater scale.
• Sumitomo Densetsu Co., Ltd. Japan-based electrical and telecommunications infrastructure construction company serving carriers, commercial clients, and data centers; comparable service mix to ADAMAS in telecom and electrical construction.
• Nippon Densetsu Kogyo Co., Ltd. (NDK): Established Japanese electrical and telecommunications infrastructure constructor with significant mobile base station and electrical work for the major carriers — directly overlaps ADAMAS's service portfolio.

Broad incumbents

• KDDI Engineering: KDDI-affiliated construction and engineering services company that builds and maintains mobile base stations and telecom infrastructure for the KDDI/au network — directly competes with ADAMAS in carrier base station work.
• NTT InfraNet: NTT Group's infrastructure construction arm, handling telecom network build, maintenance, and electrical works across the NTT/Docomo ecosystem. Operates in ADAMAS's core carrier-construction space but as a captive incumbent at far greater scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ADAMAS