www.siward.com
希華晶體-全球石英頻率控制元件領導廠商
希華晶體專精於石英頻率控制元件之研發、設計、生產與銷售，完整的產品線包含石英晶體、晶體振盪器、溫度補償型、電壓控制型產品以及人工水晶等，以健全的供應鏈系統，為客戶提供全方位的服務。
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