Shandong Huarui Electric Furnace Co., Ltd. Quality Info

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Shandong Huarui Electric Furnace Co., Ltd.

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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

Shandong Huarui Electric Furnace Co., Ltd.

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