About YILU.
YILU HK LIMITED was established in Hong Kong in 2017. In October 2018, Quantum Cat (퀀텀캣) was founded in Ansan, Korea, serving as our manufacturing and R&D base. 100,000+ FF heaters and 20,000+ LiFePO4 battery systems shipped. Self-developed IoT BMS and QLink platform power our partners' products.
Three names, one operation.
YILU is the international B2B operations brand of Quantum Cat (퀀텀캣), a Korean energy systems manufacturer in operation since 2018. Below is how the legal entities and outward-facing brands relate.
- TIER 01 — GROUP
YILU HK LIMITED
Hong Kong-registered legal entity. Counterparty for international contracts and invoicing.
- TIER 02 — MANUFACTURING
Quantum Cat (퀀텀캣) Co., Ltd.
Korean manufacturing entity, established October 2018 in Ansan-si, Gyeonggi-do. Holder of all KC and RRA certifications. Group HQ in Gwangmyeong-si.
- TIER 03 — OUTWARD BRANDS
YILU · MD홍
YILU — international B2B brand (this site, yilu.hk). MD홍 — Quantum Cat's Korean B2C retail line on Naver Brand Store, Smart Store, and YouTube.
YILU HK LIMITED was established in Hong Kong in 2017. Quantum Cat (퀀텀캣) was founded in Ansan, Korea in October 2018.
2017 → 2026.Year by year, compounding.
Starting with the mdhong-branded diesel heater, then LiFePO4, BMS, and IoT-ESS — every year has brought a new product line, all developed under one roof.
- 2017
YILU HK established
YILU HK LIMITED registered in Hong Kong as the international holding entity.
- 2018
Korean operations launched
Manufacturing and R&D base established in Ansan, Korea. mdhong-branded diesel heater line launched.
- 2018
Camping accessories
Started import & distribution business.
- 2019
LiFePO₄ launch
Released LiFePO4 batteries and DC-DC chargers.
- 2020
In-house IoT R&D
Brought product design, PCB, and firmware fully in-house. Vehicle AC unit released.
- 2023
Passive fan line
New product category added.
- 2024
BMS released
In-house Battery Management System officially launched.
- 2025
IoT-ESS integration
Full IoT-ESS solution and QLink app released.
Operating in Korea since 2018.
Our Korean retail catalog and technical work are publicly visible. Verify products, customer feedback, and engineering output directly through these channels.
In Korea, we operate both a B2B distribution network (distributors, service centers, retail partners) and direct online sales in parallel.
The international yilu.hk site does not aggregate retail reviews. If you want third-party verification before signing, the Korean channels are the fastest source.
About YILU.
YILU HK LIMITED is a smart energy OEM group. Registered in Hong Kong (2017), with manufacturing and R&D under Quantum Cat (퀀텀캣) in Ansan, Korea since October 2018.