Company introduction:
NINGBO DSW INDUSTRY CO.,LTD established in 1998. we produce the following gas: 99.999% and 99.995% helium were 99.9% and 99.999%,
99.9% and 99.999% of the laughing gas, the carbon monoxide were 99.9993% and 99.999%, 99.9993% and 99.999% of argon gas, and 99.995%
 hydrogen, 99.995% and 99.999% nitrogen, 99.999% and 99.99% were 99.999% and 99.995% and 99.999% of carbon dioxide, methane, 99.999%
 and 99.998%, and 99.999% of the oxygen, or more than 99.9% of acetylene, and so on.
So far our products are enjoying good markets at home and exporting to Asia, Middle East ,South America and European and as well as West Africa.




CALCIUM CARBIDE 50/80 MM  :+295 L /KG MIN ,YIELD BLACK CORRUGATED  Steel airtight drums of 50 kgs 
It should produce 99.9% Net Nitrogen.
It should produce 3M3 Nitrogen Gas in one hour.
It should fill [5 - 60 kg] of Nitrogen Fire Extinguisher cylinders.
It should have any types of nipple to fill the different cylinders.
It should have a tank; the capacity of tank should be 3m3.
All the devices should be installed on a metal plates and covered by a [2*3 m] container.
Totally should turn on when connect to the electricity. [No need to Montag or anyone to turn it on].
The machine should have extra parts with mechanical tools