who we are

We Are Factory

we have two production facilities in zhejiang and Guangdong provinces which are close to the port. We can provide you the high quality product with the factory price including the excellent aftersales service.

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Provided turnkey solution

We offers the complete turnkey solution for metallurgical, Foundry &Metal forming Industry,We design the plant, manufacture machine and install & commission. we Can also Provide the professional teams to run the factory till it profit for you.

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who we are

Strict Quality Control System

Before Being dispatched from our factory all of our equipment will undergo a series of strict test,including the appearance quality test, voltage electrical test, aging test also the package strength checking.

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Professional after sales service

Our teams provide the onsite installation , commissioning, and aftersale service, During one year warranty time, all the maintenance is free,And We also develop our onliner Remote installation &commission system.

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You will be offered professional one-stop-solution to boost your business

How Numbers Define Us,In The Last 5 Years



100+ Foundry


20+ steel Making Turnkey



500+ Gold Melting Furnace


200+ Heat Treatment Project


100 million

100 million dollars turnover


Exported To 120+ Countries


Hear From Our Customer

250KG induction melting furnace to Syria

“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”


“We have worked with Cooldo for over 3 years, satisfied with the furnace performance,almost no failure with stable working , It is excellent to work with Cooldo, their professioal engineer team also give me deep impression, which makes me expect more cooperation in future, I believe Cooldo will be the No 1 In this area in china.

5000kg induciton melting furnace for foundry from UKraine

“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.

vacuum annealing furnace for Amorphous Alloy  India customers

Cooldo Provided us the Amorphous alloy vacuum annealing furnace, we are very happy with their excellent products , and their professional engineer came to india to help us install the heat treatment oven, till now we have purchased 3 heat treatment oven from COOLDO,certainly we will keep long term cooperation.

induciton furnace, lab vacuum melting furnace, slag remelting furnace for Mexico University

“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.

1000kg induction melting furnace Egypt customers

We purchaseed the 1000kg induction melting furnace from Cooldo in 2015, till now furance working well,we admire their hard working in furnace design, we will set up a new plant which is 10 ton furnace, which definetely will buy from COOLDO Again

R 4 meter continuous casting machine Bangladesh

“4 Radian meters continuous casting machine was my first project with COOLDO, No production problems, Good service, better than my previous supplier, they fabricated high quality machine at exceptional prices with excellent service.surely will work with them in the long run”

Gold refinery Customer

“Cooldo has excellent professinal technology team , which help us build the line for gold refinery , this is a successful line which help me get great profit from this line, I do want to recommend Cooldo, but due to selfishness , I do not want everyone to know Cooldo , beacuse I do not want to many competitors, anyway, Wish Cooldo will better than tomorrow”

Algeria Steel rebar making line

“Mandy is so Helpful,she is professional in provide all valuable information for the newcomers in the steel rebar making “, she bring the engineer to inspect our factory onsite in Algeria , they provided too many wonderful suggestion to my factory, I was so excited to find Cooldo and mandy, thanks for all”

Chile gold concentrate melting furnace

“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.


Motor Tilting Gold Melting Furnace Integrated Gold Melting Machine1-10kg 1-50kg Gold Induction Melting Machine 150kg-500kg Induction Melting Furnace ,Foundry Casting Furnace Gold Bullion Vacuum Casting Machine