About Us

Dongguan Sunhans Technology Co., Ltd.

DAOMI, a globally recognized wireless communication solutions provider, was established in 2008 with its brand trademark registered in Utah, USA. The group comprises four subsidiaries: Dongguan Sunhans Technology Company Limited, Sanwokoy Communication Technology (HK) LIMITED, Shenzhen Yinghuajie Co., Ltd., and Shenzhen Sanwokoy Trading Co., Ltd. This integrated network spans R&D, intelligent manufacturing, sales, system integration, and after-sales services, delivering end-to-end solutions to clients worldwide.

Dongguan Sunhans Technology Co., Ltd.

Our Company

DAOMI, a globally recognized wireless communication solutions provider,
was established in 2008 with its brand trademark registered in Utah, USA.
The group comprises four subsidiaries: Dongguan Sunhans Technology
Company Limited, Sanwokoy Communication Technology (HK) LIMITED,
Shenzhen Yinghuajie Co., Ltd., and Shenzhen Sanwokoy Trading Co., Ltd.
This integrated network spans R&D, intelligent manufacturing, sales, system
integration, and after-sales services, delivering end-to-end solutions to clients
worldwide.

Product Ecosystem·Sub-Brands

Sunhans

Specializes in drone-mounted communication relay systems and smart signal amplifiers

ESunfi

Leading manufacturer of 4G/5G eSIM-enabled portable hotspots

Smart Routing Systems

Core Business
Matrix

·5G/4G LTE CPE Indoor/Outdoor Wi-Fi Routers
·Portable MiFi Hotspots with eSIM Support

Signal Optimization Solutions

·Multi-band Mobile Signal Amplifiers (2G-5G Full Spectrum Coverage)
·4G/Wi-Fi Smart Antenna Systems
·Signal Splitters & Wireless Repeaters

IoT Module Customization

·Smart Meter Modules
·Smart Charging Modules
·Smart DB Modules

DAOMI Brand Development Timeline

2002
Manufacturing Foundation

Established hardware manufacturing and RF communication capabilities in Shenzhen and Dongguan, building the foundation for future OEM/ODM solutions.

2008
Sunhans Founded

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2013
Global Expansion

Shifted business focus to international markets, beginning a new chapter of worldwide cooperation.

2016
eSIM Innovation

Launched the first 4G eSIM portable WiFi device powered by Qualcomm chipsets, leading next-generation mobile connectivity.

2017
Brand Internationalization

Registered Sunhans trademark in the USA, strengthening global brand development.

2020–2021
Global Recognition

Supplied communication products to leading enterprises including LG Electronics and Singapore Energy Group, achieving international certifications.

2022–2023
5G & Manufacturing Upgrade

Developed 5G eSIM MiFi products and established advanced manufacturing facilities with stronger customization capabilities.

2024
Precision Manufacturing Expansion

Expanded in-house mold manufacturing with advanced CNC machining and precision production capabilities.

2025
DAOMI New Era

Registered DAOMI brand in Utah, USA, and achieved over US$50 million in annual export revenue.

2026
Smart Manufacturing Future

Expanded to 94 machining machines and strengthened AI-driven intelligent manufacturing capabilities.

Core Value Proposition

Positioned as "Signal Optimization Experts", we are driving continuous innovation in wireless communication technology. Through our strategic initiative of "building a curated online sales platform for signal equipment", we integrate globally optimized communication solutions to deliver customized network deployment solutions for B2B clients and foster a smart connectivity ecosystem for end-users.