+86-151 6876 5707
Factory-Direct Engineering
Designed, assembled and tested in our own factory.
Industrial Metal Melting, Casting, Vacuum and Heat Treatment Equipment Manufacturer
What We Do
System Finder
Start with your process.
Tell us your metal, process and capacity. Our engineers will recommend a suitable equipment route.
20+Years manufacturing experience
120+Countries using COOLDO machines
1,000+Industrial systems delivered
Who We Are
Industrial Metal Processing Equipment Manufacturer
COOLDO manufactures equipment for metal melting, continuous casting, vacuum processing and industrial heat treatment. For more than 20 years, we have supplied practical production solutions to customers in over 120 countries.
From compact furnaces to complete production lines, we support equipment selection, workshop planning, commissioning guidance and dependable after-sales service.
Process Experience
Equipment matched to your metal, capacity and production route.
Project Support
Selection, commissioning guidance and long-term service.
Why Choose Us
Built for Buyers Who Need Stable Production, Not Just a Machine
We help buyers compare the right technology, capacity, process route and investment level before production starts.
Customized by Capacity and Metal Type
We configure induction power, furnace structure, chamber size, handling and cooling around your material and daily production target.
Real Testing Before Shipment
Key machines are tested under working conditions, including heating, tilting, vacuum holding and control performance.
Technical Backup After Installation
COOLDO supports operators with parameter suggestions, troubleshooting, spare parts and long-term process guidance.
CUSTOMER STORIES
“COOLDO Provide us the European quality 250kg induction melting furnace with chinese price, we set up this furnace in syria, because we have big problem in the electricity , cooldo helped us customized the furnace which enable furnace to with the Generator ,we really appreciated their help, thanks to their professional team effort which make me get a very good profit through this project”
“Cooldo Help us design a turnkey service for our foundry, including design, install,implement for our factory”, we purchase the newest design of the steel frame induction furnace with 5000kg with all other related equipment in this foundry, we are so satisfied with the quality of all equipment and all price are affordable.
“Cooldo Provided us the excellent vacuum melting furnace & vacuum slag remelting furnace with reasonable price and high quality, the remelting furnace is high technology , seldom factory can manufacture this type furnace especially the vacuum type slag remelting, luckily, we meet Cooldo, and their engineers have been successfully install the whole plant in Mexico,We appreciated Cooldo Help.
“We purchase 200kg hydraulic tilting gold melting furnace for gold concentrate from Cooldo in 2012, till now,6 years passed, the furnace even perform good working condition, seldom have any failure, we are all amazing about it, we buy this furnace with chinese price but get a European Quality. Thanks to Cooldo, Wish your company a brighter future.
Videos & Buyer Guides
See Real Machines Before You Choose
Watch COOLDO equipment in action and read practical buying guides before investing in melting, casting, vacuum or heat-treatment machinery.
Motor Tilting Gold Melting Furnace
See COOLDO industrial equipment operating under real production conditions, then compare process routes and purchasing details before ordering.
01
02
03
04
WHY DO WE CHOOSE QPQ HEAT TREATMENT FURNACE？
I. Description of …
Pit Type Nitriding Heat Treatment Furnace
QPQ Salt Bath Nitriding Treatment Process
Coin Mint Line
Still comparing equipment? Start with your metal, process and target capacity, then ask our engineers for a recommendation →
Need help choosing the right production line?Tell us your metal type, daily capacity, target product and budget. COOLDO engineers will recommend a suitable solution.
Request Recommendation