From 2020 to present

From 2020 to present

After the shareholding reform, it was changed to Xi'an Filter Metal Materials Co., Ltd, which was listed on the NEEQ in March 2021 and entered the innovation layer of the New Third Board in May of the same year.

2005~2019

2005~2019

Xi'an Filter Metal Materials Co., Ltd, holding by Western Metal Materials Co., Ltd. (WMM)

2002~2005

2002~2005

Xi'an Filter New Materials Co., Ltd., a wholly-owned subsidiary of WMM.

1992~2002

1992~2002

Xi'an Filter New Materials Co., Ltd., jointly established by Northwest Institute for Nonferrous Metal Research(NIN) and Xi'an Nonferrous Metals.

1989~1992

1989~1992

Powder Metallurgy Research Institute, belonging to NIN.

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