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Shandong Huarui Electric Furnace Co., Ltd. Certifications
Standard: GB/T19001-2016/ISO9001:2015
Number: 56621Q00479ROS
Issue Date: 2021-02-02
Expiry Date: 2024-02-01
Scope/Range: Production of induction melting furnaces
Issued By: Qingdao Biaopu Authentication Company
Shandong Huarui Electric Furnace Co., Ltd. Certifications
Standard: Patent
Number: 18445643
Issue Date: 2023-02-10
Expiry Date: 2024-02-10
Scope/Range: thyristor series-connected inverting medium frequency power supply equipment
Issued By: National Intellectual Property Right Bureau
Shandong Huarui Electric Furnace Co., Ltd. Certifications
Standard: Patent
Number: 18687132
Issue Date: 2023-03-24
Expiry Date: 2024-03-24
Scope/Range: IGBT Module drive unit of Medium Frequency Power Supply
Issued By: National Intellectual Property Right Bureau
Shandong Huarui Electric Furnace Co., Ltd. Certifications
Standard: Patent
Number: 18696935
Issue Date: 2023-03-24
Expiry Date: 2024-03-24
Scope/Range: a kind of current limiting inductor with higher safety
Issued By: National Intellectual Property Right Bureau
Shandong Huarui Electric Furnace Co., Ltd. Certifications
Standard: Patent
Number: 16108815
Issue Date: 2023-03-24
Expiry Date: 2024-03-24
Scope/Range: IGBT Dual Cell Transistor Medium Frequency Power Supply Device
Issued By: National Intellectual Property Right Bureau
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