Management systems

ISO 9001 quality management certificate, Okay Energy Technology (Tianjin)
ISO 9001:2015 — Quality managementOkay Energy Technology (Tianjin) Co., Ltd.No. 17425Q21084R0MValid 7 Aug 2025 – 6 Aug 2028HXC certification
ISO 14001 environmental management certificate, Okay Energy Technology (Tianjin)
ISO 14001:2015 — Environmental managementOkay Energy Technology (Tianjin) Co., Ltd.No. 17425E20729R0MIssued 22 Jul 2025 – 21 Jul 2028HXC certification
ISO 45001 occupational health and safety certificate, Okay Energy Technology (Tianjin)
ISO 45001:2018 — Occupational health & safetyOkay Energy Technology (Tianjin) Co., Ltd.No. 17425S20660R0MIssued 22 Jul 2025 – 21 Jul 2028HXC certification
BCC quality management system certificate, Okay Energy Equipment (Tianjin)
ISO 9001 — Quality managementOkay Energy Equipment (Tianjin) Co., Ltd.Re-certified 26 Feb 2024 – 28 Mar 2027BCC
BCC environmental management system certificate, Okay Energy Equipment (Tianjin)
ISO 14001 — Environmental managementOkay Energy Equipment (Tianjin) Co., Ltd.Re-certified 26 Feb 2024 – 28 Mar 2027BCC
BCC occupational health and safety certificate, Okay Energy Equipment (Tianjin)
ISO 45001 — Occupational health & safetyOkay Energy Equipment (Tianjin) Co., Ltd.Re-certified 26 Feb 2024 – 28 Mar 2027BCC

ASME authorisation

ASME Certificate of Authorization U, number 63015
ASME Certificate of Authorization — UOkay Energy Technology (Tianjin) Co., Ltd.No. 6301512 Feb 2026 – 12 Feb 2029ASME. Scope: manufacture of pressure vessels at the Saida North 1st Road location only
ASME Certificate of Authorization U2, number 63016
ASME Certificate of Authorization — U2Okay Energy Technology (Tianjin) Co., Ltd.No. 6301612 Feb 2026 – 12 Feb 2029ASME. Scope: Class 1 and Class 2 pressure vessels at the same location only

China special equipment production licences

Special equipment production licence — pressure piping design (GC2), TS1812BG8-2029
Special equipment production licence — pressure piping design (industrial piping GC2)Okay Energy Technology (Tianjin) Co., Ltd.No. TS1812BG8-2029Valid to 8 Apr 2029China special equipment licence
Special equipment production licence — pressure piping element manufacture, TS2712286-2029
Special equipment production licence — pressure piping element manufacture (combined element units; gas pressure regulating devices; desuperheating & pressure reducing devices)Okay Energy Technology (Tianjin) Co., Ltd.No. TS2712286-2029Valid to 8 Jun 2029China special equipment licence
Special equipment production licence — pressure vessel manufacture, TS2212286-2029
Special equipment production licence — pressure vessel manufacture (fixed vessels, class A2 covering D)Okay Energy Technology (Tianjin) Co., Ltd.No. TS2212286-2029Valid to 20 Jul 2029China special equipment licence

Patents

Chinese invention patent certificate — hydrogen energy gas blending device, ZL 2023 1 0882875.8
Hydrogen energy gas blending deviceChinese invention patentCN 116592277 B (ZL 2023 1 0882875.8)Granted 8 Sep 2023
Chinese invention patent certificate — mine gas safe blending system and ratio control method, ZL 2020 1 0783747.4
Mine gas safe blending system and blending ratio control methodChinese invention patentCN 111928119 B (ZL 2020 1 0783747.4)Granted 2 Jun 2023
Chinese utility model certificate — hydrogen energy gas blending system, ZL 2020 2 1681860.3
Hydrogen energy gas blending systemChinese utility model (co-owned patent)CN 212819205 U (ZL 2020 2 1681860.3)Granted 30 Mar 2021
South African patent certificate — natural gas hydrogen-doped mixer, 2023/05688
Natural gas hydrogen-doped mixerSouth African patentSouth Africa 2023/05688 (PCT/CN2022/122960)Granted 20 Dec 2023

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