01
Engineering & Tooling Department
Motor and airflow design, 3D modelling, prototype builds and in-house mould making.
About Warmzuno · Since 2016
A factory that
A factory that
thinks like a brand.
Warmzuno Electronics (Dongguan) Co., Ltd. is an OEM/ODM manufacturer of rechargeable pocket, wearable and desk warmers — built for importers, distributors and promotional-gift companies that need the sample they approve to match the shipment they receive.
Founded 2016 in Dongguan
8,000 m² facility, 6 production lines
300,000 pcs monthly capacity
Why Choose Us
Six reasons buyers
Six reasons buyers
stay with Warmzuno.
Not a longer feature list — six operating habits that decide whether an order lands on time, on spec and on budget.
01
One-Roof OEM/ODM
Tooling, moulding, printing, assembly and testing all run inside our own 8,000 m² facility, so nothing critical is outsourced out of sight.
02
Sample-to-Mass Consistency
The approved golden sample is the reference for every production run, with airflow, noise and battery checks recorded per batch.
03
Flexible MOQ Ladder
Start at 500 pieces on stock models, 1,000 for a custom logo or colour, and 3,000 for a fully new ODM tooling project.
04
Fast, Quoted Sampling
Existing-model samples with your logo ship in 7–10 working days; new-tooling samples in 20–25 working days, with the fee credited to the first order.
05
Export-Ready Documentation
Buyers receive a standard compliance document pack covering the CE, FCC, RoHS, UN38.3 and ISO 9001 requirement types — with no invented certificate numbers.
06
Straightforward After-Sales
A 12-month limited warranty and 30-day defect replacement keep claims simple for distributors and their retail customers.
Our Story
From two lines
From two lines
to one promise.
Our Mission
To make personal warming reliably manufacturable, so every brand we serve can ship a pocket warmer it is proud to put its name on.
Warmzuno began in 2016 in Dongguan, a city built on making small things well. Our founders had spent years servicing portable-fan production lines for other brands, and kept hearing the same complaint from buyers: attractive samples, inconsistent mass production. So we built a factory around a single promise — the unit a buyer approves is the unit a buyer receives. From a two-line workshop we grew into an 8,000 m² OEM/ODM facility shipping 300,000 pocket warmers a month, without ever taking that promise off the wall.
Today Warmzuno works with importers, distributors and promotional-gift companies across North America, Western Europe, Japan, Korea, Southeast Asia and the Middle East. We keep engineering, tooling, moulding, assembly and testing under one roof, so a custom logo, a new colour or a revised airflow curve can be quoted and sampled in days rather than months. We do not claim to be the biggest hand warmer factory in Guangdong. We claim to be the one that answers questions before they become problems — and that is the whole brand.
Key Information
The profile, in one table.
The numbers sourcing teams screen for, kept in one place and kept consistent with the rest of this site.
Milestones
Ten years,
Ten years,
six turning points.
-
2016
Warmzuno was founded in Dongguan as a two-line handheld-fan assembly workshop serving local trading companies.
-
2018
We brought injection moulding and a dedicated QC lab in-house, cutting sample-to-approval time to under two weeks.
-
2020
Monthly output passed 100,000 units and we began exporting directly to distributors in North America and Western Europe.
-
2022
The ODM programme launched, offering custom housings, airflow tuning and private-label packaging from a single brief.
-
2024
Production moved into an 8,000 m² facility with 180 staff, six lines and a monthly capacity of 300,000 units.
-
2026
We standardised an export documentation checklist covering the CE, FCC, RoHS, UN38.3 and ISO 9001 requirement types for every model.
Team & Departments
Four departments,
Four departments,
one roof.
Every buyer-facing question has a named department behind it — engineering, manufacturing, quality or export sales.
02
Manufacturing & Assembly Department
Injection moulding, battery and PCB assembly, final assembly lines and packing.
03
Quality & Compliance Department
Incoming material inspection, ageing and drop tests, battery safety checks and export documentation.
04
Export Sales & Project Management Department
Quoting, sampling coordination, order tracking, shipping documents and after-sales handling.
Work With Us
See the promise
See the promise
in a sample.
The fastest way to judge a factory is to hold its work. Start with a stock-model sample, or send a brief and we will quote the custom route.
Request a sample from any stock model — 7–10 working days
Ask for the five-step OEM/ODM process and MOQ tiers
Get the current capacity schedule for your market