How do I get the unit shipped to my location?

We ship explosion proof equipment worldwide by sea or by air according to your order size and the time in need of the equipment. All our equipment will be packed carefully so that to arrive at your location on time in a good condition.

How do I proceed with an order?

We offer free and detailed pre-sales consulting to work together with you to choose the best unit for your hazardous areas. Once you are ready to place an order, please contact your sales representative to provide you a Proforma invoice with the order details and follow the procedures to conduct the ordering.

What is the average delivery time?

Delivery times may vary based on the unit selection and specifications from the client. ZTZN Ex goes to great lengths to deliver its client (old or new) better customer experience, faster delivery time is definitely one of the markers of better customer experience.

Who do I contact about purchasing an explosion proof air conditioner?

Please contact our corporate headquarters at +0086 18613770573 or email us at

Do you ship equipment to the middle east?

Yes, we ship orders worldwide.

What are the Explosion Proof lighting fixtures?

Explosion proof lights are high resistance lighting fixtures which can work in harsh condition zones such as refineries, railways, coal mines, factories, manufacturing sites, and other similar areas.

What is explosion proof, and how do I determine what best suits my needs?

The concept of explosion proof doesn’t mean that it can prevent or withstand an external explosion. It simply will contain any explosion originating within the housing and prevent sparks within the housing from igniting vapors, gases, dust or fibers in the air surrounding it.

According to IEC 60079 standards, there are different types of explosion protection (electrical), the most common applied types are:

d Flameproof Equipment

p Pressurization

q Quartz encapsulation

e Increased safety

i Intrinsically safety

n Non incendive

m Moulded encapsulation

op Optical radiation

t Protection by enclosure

Whenever you start to look for an explosion proof unit, you will need to define the zone (at what circumstance your ex-proof unit will be used), your ambient atmosphere temperature and temperature classes on equipment etc. ZTZN’ professional technical team will help you identify the best suitable unit depending on the information you provide. We look forward to hearing from you. Please note that cost and delivery can sometimes be affected by the classification of your unit. Please confirm that your selection is correct for both safety and delivery issues.

Can you design a custom explosion proof solution for me?

Yes! We have staff engineers and designers that create custom solutions for our clients daily. Just contact our office or email us at

I need an explosion proof system but am not positive how to go about it. Just looking to try and understand my needs.

Sometimes you just need a little information. Reach out to us by calling or email. (Phone Number:+0086 18613770573 our experience work for you. We spend a lot of time working with contractors, engineers, and many people just planning for upcoming projects. We would be happy to help you on any level you need. If you have any questions, just feel free to contact us at any time. Service comes first.

Can I open an Ex-e junction/terminal box during service and perform any work there?

No! This is absolutely prohibited.


Make sure that the circuit(s) have been isolated (switched off), only then you can start to work inside the terminal box. Take care that only approved tools for Ex areas are being used.

Can I open and repair approved explosion proof devices?

No! You will not only lose the manufacturer warranty but also will violate the standards and regulations. Equipment may only be opened and repaired by the following organizations:

a) The manufacturer

b) Approved, certified persons or agencies

Please use approved tools in hazardous (Ex) areas

For all work in hazardous areas only approved and/or suitable tools, measuring and testing equipment may be used. Mechanical tools (hammers, screw drivers etc) must not be capable of producing sparks. Measuring equipment must be approved for being used in Ex areas and even on intrinsically safe circuits outside the Ex area. The same applies to mobile phones, pocket calculators, torches.


Interested in our products or need advice?

If you have any further questions or queries please do not hesitate to get in touch.