Hazardous Chemical Business Licence
Chenzhou Emergency Management Bureau
Operation with storage, covering nitrous oxide, oxygen, carbon dioxide, nitrogen, argon, acetylene and propane. Valid to November 2028.
View certificateLicensed to fill it, inspect it and ship it
Compressed and liquefied gases are regulated at every step in China, and each step needs its own licence. We hold all of them ourselves, so no part of the chain sits with a third party whose paperwork you cannot see.
Our licences & accreditations
Issued by Chinese market regulation and emergency management authorities, and by a CNAS-accredited testing institute. Click any certificate to open the full document.
Cylinder Filling Licence
Hunan Administration for Market Regulation
Filling of oxygen, liquid oxygen and nitrous oxide in seamless and welded cylinders. Certificate TS424341L015, valid to August 2029.
View certificateSpecial Equipment Inspection Accreditation
Hunan Administration for Market Regulation
Class A, Grade B2 — periodic inspection of seamless cylinders for oxygen, argon, nitrogen, carbon dioxide and nitrous oxide (code RD6). Valid to March 2030.
View certificateHazard Classification Report for Transport
Shanghai Institute of Chemical Industry Testing (CNAS IB0071)
Nitrous oxide classified under the 2024 IMDG Code for sea freight: UN1070, Class 2.2 with 5.1 subsidiary hazard, no packing group. Report 202601679164902, issued 29 July 2026.
View certificateBusiness Licence
Zixing Administration for Market Regulation
Registered capital CNY 8.88 million, with import and export rights, hazardous chemical operation, cylinder filling and special-equipment inspection in scope.
View certificateCertificates carry validity periods and are renewed on their own cycle. Full-resolution copies and current validity dates go to buyers on request, so you always check against the live document rather than a screenshot.
How quality is held
A licence proves we are allowed to fill. These are the checks that decide whether a particular cylinder leaves the site.
Batch analysis
Gas is tested by a nationally accredited body and the certificate of analysis travels with the shipment.
Cylinder inspection
Periodic inspection under our own accreditation, code RD6, before a cylinder returns to service.
Electronic weighing
Fills are weighed on the line, so charge weight is checked rather than assumed.
Certificated operators
Filling, inspection, escorting and driving are each done by individually certificated staff.
Need documents for a tender?
We can send the licence set, the hazard classification report, a current safety data sheet and a sample certificate of analysis before you place a first order.