Shandong Huarui Electric Furnace Co., Ltd. quality control

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

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

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

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

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