Sun Technical

What Sun Technical does

Sun Technical Co., Ltd. (サンテクニカル株式会社) is a Tokyo-headquartered, privately held Japanese software development and consulting company founded on September 16, 1998 by Miura Kaname alongside two colleagues as a collective of independent engineers. The company delivers a dual offering: a custom system integration (SI) and consulting practice spanning requirements definition through maintenance, plus a packaged product portfolio anchored by its patented Internet Reservation Inquiry System (Patent No. 3128583, granted October 2000), Internet E-Commerce Service, Internet Inventory Management, AI Consulting, Interconnect CRM with predictive forecasting, and website creation services. Its technology stack extends from hardware through firmware to application software, supported by self-operated UPS-equipped data centers with air-gap network isolation for AI development.

The firm's revenue model blends subscription/recurring SaaS (booking systems running under 10,000 yen/month, e-commerce tiers from 2,625 to 4,725 yen/month), retainer-based AI technical advisory (528,350 yen/month standard; 1.2-1.5M yen/month on-site resident), one-time professional services (website creation from 4,200 yen/page, custom SI projects, AI contract development), and legacy hardware sales. Customers are predominantly Japanese SMBs, with strong vertical depth in dental and medical clinics (national dental search portal covering all 47 prefectures and 4,000+ registered clinics historically), plus adjacent verticals in beauty, hospitality, entertainment, and Japanese companies expanding overseas. Sales relies on direct outreach (phone 03-3355-3755, [email protected]), corporate website, and a network of industry-specific portals.

Internationally, Sun Technical operates 100%-owned subsidiaries Sun Central, Inc. (Monrovia/Los Angeles, established 2000, E-Visa Company approved May 2020) and SC Vietnam Co., Ltd. (Ho Chi Minh City, registered August 21, 2025), with a historical travel-agency subsidiary Sun Asia United Co., Ltd. in Thailand. The firm is licensed as a dispatch worker agency (\u6d3e13-301063), holds Privacy Mark certification (No. 10823628(01)) from JIPDEC since June 2010, and maintains offices in Tokyo (Shinjuku HQ, Nishi-Shinjuku branch, Kinshichō/Otemachi-style development data center), Yokohama (sales office from February 2022), and Chiba (Oamishirasato R&D). Leadership comprises four directors including a managing director appointed July 2024, and the company continues to actively hire engineers and sales staff.

Name

Sun Technical

Legal name

サンテクニカル株式会社

Website

https://st-se.co.jp

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

Sun Technical Co., Ltd. is a Tokyo-based Japanese software development and consulting firm founded in 1998, delivering custom system integration alongside a patented internet booking system, e-commerce, inventory management, and AI consulting products primarily to Japanese SMBs in the dental, medical, and service-industry verticals, with overseas subsidiaries in the US and Vietnam.

Ownership category

akta.pro rank

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices7 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. System Integration & Custom Development: Custom software development including web systems, client-server systems, and control programming. The company handles full lifecycle from requirements definition through development and maintenance, with particular expertise in large-scale database systems and AI integration. Revenue includes SES (Systems Engineering Services) engagements.
2. Internet Reservation System (ASP/SaaS): Monthly subscription rental service for the internet booking system. Running costs including internet connection fees are kept below 10,000 yen per month. One-time event rental service available at 15,000 yen/month. The system is server-based, eliminating need for customer-side installation.
3. E-Commerce Services (Eコマース): Internet commercial transaction services with multiple plan tiers. Plans range from basic (80,850 yen setup + 2,625 yen/month) to executive suite (409,500 yen setup + 4,725 yen/month), including SSL, scheduling tools, and sales support features.
4. AI Technical Advisory Services: Technical consulting and advisory services providing computer technology expertise on a monthly retainer basis. Standard monthly retainer: 528,350 yen. On-site technical resident (1 month unit): 1,200,000 yen (Tokyo) / 1,500,000 yen (other Kanto).
5. Website Creation Services: Website creation and hosting services for dental clinics and general businesses. Pricing starts from 4,200 yen per page for HTML. Additional services include CGI, JavaScript, translation, and domain registration.
6. Hardware Sales: Computer hardware sales with one-year full warranty and phone guidance included. Installation services by company technicians available for a nominal travel fee.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels4 records

Core offering

Sun Technical is a Japanese software development and consulting firm that builds and sells proprietary internet-based business solutions including a patented Internet Reservation System, e-commerce platforms, web-based inventory management, AI-powered CRM systems, and offers custom AI and software development services. The company also provides website creation, 3D content development, and AI technical advisory services, primarily targeting Japanese SMEs, dental and medical clinics, and Japanese companies expanding overseas.

Product overview

Sun Technical offers a comprehensive suite of internet-based business solutions centered on AI-powered systems. The core portfolio includes the patented Internet Reservation Inquiry System for multi-industry appointment management, E-Commerce platforms for online transactions, Inventory Management systems, AI Consulting services, and Customer Relationship Management with predictive analytics. Supporting services include website creation, 3D content development, technical advisory, and custom software development. The company also operates a dental clinic information portal (全国医院情報提供サービス) as a separate sub-brand. Products operate on a platform model with ASP/SaaS delivery from Sun Technical's own data centers.

Differentiator

Problem solved

Functional benefit

Brands

• 全国小学校情報提供サービス: Japan's largest dental clinic search and information service covering all 47 prefectures

Products and services

• Internet Reservation Inquiry System (インターネット予約照会システム) 24/7 real-time internet-based reservation management system allowing customers to book appointments online. Supports dental clinics, medical offices, beauty salons, hotels, karaoke establishments, and animal hospitals. Features include duplicate booking prevention, automated email confirmations, CSV data export, and multilingual support. Operates on company-owned infrastructure.
• E-Commerce Service (インターネット商取引サービス) Comprehensive electronic commerce platform enabling businesses to conduct online sales, manage product catalogs, and process transactions with SSL encryption. Includes multiple pricing tiers from basic (80,850 yen setup) to executive suite (409,500 yen setup) with scheduling tools and sales support features.
• Internet Inventory Management System (インターネット在庫管理システム)

Quantifiable outcome

• 30% of appointments at dental clinics using the booking system come through the internet booking channel
• +4 more outcomes

Named customers2 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature5 records

Partnerships

Five partnerships are on record, tiered core and minor.

• SC Vietnam Co., Ltd. (Công ty TNHH Sun Central Việt Nam)coreOthers · 21 August 2025100% owned Vietnamese subsidiary registered in Ho Chi Minh City, Socialist Republic of Vietnam. Established in August 2025 with the purpose of providing IT solution services targeting Japanese companies operating in Vietnam.
• Sun Central, Inc. (United States)coreOthers · 16 September 1998100% owned US subsidiary based in Monrovia/Los Angeles, California. Established in 2000 in San Jose, moved to LA area in 2017. Operates SI division providing consulting and contract development services for Japanese companies entering the US market. Also operates a ramen restaurant (MoonCat Ramen). Received multiple capital increases totaling $200,000 by 2020. Company received E-Visa Company designation from US immigration authorities.
• 澤田税理士事務所 (Sawai Tax Accounting Office)minorImplementation/ SI/ Consulting PartnerCompany's designated tax advisor. Tax accountant: 澤田 周延. Located in Tokyo. Provides ongoing tax advisory and financial consultation services.
• 樫の木総合律师事务所 (Kashinoki General Law Office)minorImplementation/ SI/ Consulting PartnerCompany's designated legal counsel. Attorney: 菊地 宏. Located in Tokyo. Provides ongoing legal advisory services.
• Sun Asia United Co., Ltd. (Thailand)minorOthersTravel agency subsidiary established in Thailand in March 2001 (capital 300,000 baht). Founded to support overseas business travel for employees. Currently listed as an inactive subsidiary.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• NTT DATA Group Corporation: Japan's largest system integrator serving global enterprises and governments—competes broadly with Sun Technical in Japanese SI while covering vastly more vertical and geographic scope.
• Fujitsu Limited: Global Japanese-headquartered SI and IT services giant offering cloud, AI, and digital transformation services at massive scale—a benchmark incumbent competitor to Sun Technical's Japanese SI/AI consulting.
• BIPROGY Inc. (formerly Nihon Unisys): Major Japanese SI serving financial, public-sector and enterprise clients with custom development and consulting—a larger incumbent competing with Sun Technical in Japanese system integration.

Direct peers

• Access Co., Ltd. Japanese embedded/edge computing and IoT software firm with a similar private-company profile and comparable size, working in system integration, software R&D and international subsidiaries.
• Future Corporation: Tokyo-headquartered IT consulting and systems integrator offering advisory, custom development, and managed services to Japanese enterprises and government—overlapping with Sun Technical's SI and IT consulting offerings.
• COMTURE Corporation: Japanese IT solutions firm specializing in digital transformation, AI, and cloud solutions for Japanese enterprise and mid-market clients—closely comparable to Sun Technical's SI + AI consulting + SaaS portfolio.
• CRESCO Co., Ltd. Mid-sized Japanese SI company providing system development and IT consulting for financial, manufacturing, and distribution clients—comparable to Sun Technical's SI and DX consulting focus.
• ULS Group, Inc. Japanese SI and engineering services provider with focus on IT infrastructure, AI consulting, and SES staffing—operating as a comparable mid-sized SI peer serving Japanese enterprise clients.

Regional players

• Kanematsu Sustech Corporation: Japan-based IT services subsidiary of major trading house Kanematsu, providing SI, AI, and DX services domestically—a similar mid-sized Japanese SI competitor with comparable capabilities.

Emerging players

• Choice Reserve (RESERVA): Popular Japanese cloud-based reservation/booking SaaS serving salons, clinics, schools and event businesses—a direct functional competitor in the internet reservation system market segment.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries3 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 Sun Technical