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Is Tianjin Huanou Semiconductor the same as Tianjin Zhonghuan Semiconductor?

Tianjin Huanou Semiconductor is the former Tianjin Semiconductor Material Factory, and its material is monocrystalline silicon. Zhonghuan Semiconductor was originally Tianjin No.3 Semiconductor Factory, which made semiconductor devices. Now they all belong to Tianjin Zhonghuan Electronic Information Group. Now Tianjin Huanou is a wholly-owned subsidiary of Zhonghuan Semiconductor, accounting for 100%. The two companies are in the same compound, and you can't see the brand of Tianjin Huanou anywhere, only Zhonghuan Semiconductor.