2017       投资纽西兰石英元件厂Rakon晶振，取得一席董事与16％股权，发展卫星国防等高阶产品。
2013       与湖北泰晶合资成立泰华科技，大幅扩充产能。
2011       成立南科分公司，量产人工晶棒。
2010       通过SGS QC-080000 HSPM验证，并量产小型化SMD
2008       成立威华微机电，导入微机电制程（半导体制程）通过TS-16949、OHSAS-18001认证
2007       SMD2.5x2.0 X’TAL & O.S.C.量产
2006       通过 SGS QS9000 / ISO9001验证
2004       设立Product analysis Lab. 通过 SONY绿色伙伴验证(SONY GP)
2003       通过ISO-9001,ISO-14001,SONY-SS00259 认证架设铷原子钟标准信号源
2002       开发SMD 3.2X2.5 X'TAL 及总部新厂落成
2001       建购希华总部大楼及无钖厂量产导入开发SMD 5X3.2 VC/TCXO 和 SMD 4X2.5 X'TAL 无钖厂成功量产人工水晶Z-BAR 台湾证券交易所股份有限公司核准股票上市
2000       购并日本明电通信株式会社, 成立希华科技(股)公司大陆无钖厂设立. VCO 量产
1997       公司股票经财政部证券管理委员会核准公开发行。
1996       通过ISO 9002认证及SAW WAFER量产兴建高性能人工水晶炉
1995       TCXO 量产及超小型开发通过ISO 9001认证
1994       开发SAW FILTER 并通过ISO 9002认证正式推出与工研院合作开发的 SAW DEVICES 产品
1993       量产水晶滤波器
1991 开发量产超小型石英晶体振荡器及单晶滤波器(M.C.F) 开发温度补偿振荡器度(T.C.X.O)
1988       希华正式成立, 资本额为1,500万元整

SIWARD原厂编码	生产商品牌	型号	频率	频率偏差度	负载电荷	工作温度
XTL721-Q23-048	Siward晶振	XTL72	32.768 kHz	±20ppm	6pF	-40°C ~ 85°C
XTL721-S349-005	Siward晶振	XTL72	32.768 kHz	±20ppm	7pF	-40°C ~ 85°C
XTL721-S999-301	Siward晶振	XTL72	32.768 kHz	±20ppm	9pF	-40°C ~ 85°C
XTL721-S999-429	Siward晶振	XTL72	32.768 kHz	±20ppm	6pF	-40°C ~ 85°C
XTL741-S999-319	Siward晶振	XTL74	32.768 kHz	±20ppm	9pF	-40°C ~ 85°C
XTL741-U11-402	Siward晶振	XTL74	32.768 kHz	±20ppm	7pF	-40°C ~ 85°C
XTL741-S999-298	Siward晶振	XTL74	32.768 kHz	±20ppm	12.5pF	-40°C ~ 85°C
XTL741-S999-379	Siward晶振	XTL74	32.768 kHz	±20ppm	7pF	-40°C ~ 85°C
XTL741-S999-327	Siward晶振	XTL74	32.768 kHz	±20ppm	4pF	-40°C ~ 85°C
XTL721-S999-286	Siward晶振	XTL72	32.768 kHz	±20ppm	12.5pF	-40°C ~ 85°C
XTL751-S999-544	Siward晶振	XTL75	32.768 kHz	±20ppm	12.5pF	-40°C ~ 85°C
XTL751-S999-548	Siward晶振	XTL75	32.768 kHz	±20ppm	9pF	-40°C ~ 85°C
XTL751-S999-420	Siward晶振	XTL75	32.768 kHz	±20ppm	7pF	-40°C ~ 85°C
CGX70502-13.800-G108	Siward晶振	CGX-70502	13.8 MHz	±50ppm	16pF	-10°C ~ 60°C
CGX70502-14.050-G109	Siward晶振	CGX-70502	14.05 MHz	±50ppm	16pF	-10°C ~ 60°C
CGX70502-14.800-H134	Siward晶振	CGX-70502	14.8 MHz	±50ppm	16pF	-10°C ~ 60°C
CGX70502-15.425-H135	Siward晶振	CGX-70502	15.425 MHz	±50ppm	16pF	-10°C ~ 60°C
CGX70502-15.925-H136	Siward晶振	CGX-70502	15.925 MHz	±50ppm	16pF	-10°C ~ 60°C
CGX70502-16.300-H137	Siward晶振	CGX-70502	16.3 MHz	±50ppm	16pF	-10°C ~ 60°C
XTL581100-J96-011	Siward晶振	SX-2520	16 MHz	±10ppm	8pF	-20 ℃~70 ℃
XTL571200-K114-002	Siward晶振	SX-3225	12 MHz	±10ppm	10pF	-40°C ~ 85°C
XTL571150-F98-063	Siward晶振	SX-3225	24 MHz	±15ppm	18pF	-20 ℃~70 ℃
XTL571100-H201-493	Siward晶振	SX-3225	25 MHz	±10ppm	12pF	-20 ℃~70 ℃
XTL541200-C282-030	Siward晶振	SX-5032	8 MHz	±20ppm	20pF	-40°C ~ 85°C
XTL5A1100-M118-056	Siward晶振	SXT-2520	26 MHz	±10ppm	7pF	-30°C ~ 85°C
XTL5A1100-M118-132	Siward晶振	SXT-2520	26 MHz	±10ppm	7pF	-30°C ~ 105°C
XTL5A1100-S362-009	Siward晶振	SXT-2520	26 MHz	±10ppm	9pF	-30°C ~ 85°C
XTL55S16-S208-018TR4	Siward晶振	SX-4025	16 MHz	±10ppm	9pF	-20 ℃~75 ℃
XTL721-G78-1609	Siward晶振	CSF-3215	32.768 kHz	±20ppm	12.5pF	-40°C ~ 85°C
XTL741-R53-039	Siward晶振	SF-2012	32 kHz	±20ppm	12.5pF	-40°C ~ 85°C
XTL741-S999-321	Siward晶振	SF-2012	32.768 kHz	±20ppm	12.5pF	-40°C ~ 85°C
XTL501100-F98-044	Siward晶振	SX-2016	24 MHz	±10ppm	8pF	-20 ℃~75 ℃
XTL501100-S413-007	Siward晶振	SX-2016	32 MHz	±10ppm	9pF	-20 ℃~75 ℃
XTL541200-C282-030	Siward晶振	SX-5032	8 MHz	±20ppm	20pF	-40°C ~ 85°C
XTL571100-C249-064	Siward晶振	SX-3225	37.4 MHz	±10ppm	10pF	-10°C ~ 70°C
XTL571100-F98-020	Siward晶振	SX-3225	12 MHz	±10ppm	10pF	-20 ℃~70 ℃
XTL571100-H201-493	Siward晶振	SX-3225	25 MHz	±10ppm	12pF	-20 ℃~70 ℃
XTL571100-M118-048	Siward晶振	SX-3225	26 MHz	±10ppm	7.3pF	-20 ℃~75 ℃
XTL571100-N98-008	Siward晶振	SX-3225	25 MHz	±10ppm	20pF	-20 ℃~75 ℃
XTL571150-F98-063	Siward晶振	SX-3225	24 MHz	±15ppm	18pF	-20 ℃~75 ℃
XTL571150-G47-219	Siward晶振	SX-3225	25 MHz	±10ppm	18pF	-40°C ~ 85°C
XTL571150-M118-070	Siward晶振	SX-3225	40 MHz	±7ppm	13pF	-40°C ~ 85°C
XTL571200-H201-177	Siward晶振	SX-3225	32 MHz	±10ppm	9pF	-40°C ~ 85°C
XTL571200-V42-001	Siward晶振	SX-3225	12 MHz	±20ppm	20pF	-10°C ~ 70°C
XTL571300-U11-279	Siward晶振	SX-3225	12 MHz	±30ppm	12pF	-40°C ~ 85°C
XTL581100-J96-011	Siward晶振	SX-2520	16 MHz	±10ppm	8pF	-20 ℃~70 ℃
XTL581100-M171-008	Siward晶振	SX-2520	38.4 MHz	±10ppm	10pF	-30°C ~ 85°C
XTL581200-G47-319	Siward晶振	SX-2520	12 MHz	±10ppm	10pF	-40°C ~ 85°C
XTL581150-G47-223	Siward晶振	SX-2520	40 MHz	±10ppm	12pF	-30°C ~ 85°C
XTL501300-A292-004	Siward晶振	SX-2016	16 MHz	±20ppm	9pF	-40°C ~ 85°C