Advanced Semiconductor Engineering, Inc. [ASX]
Advantest Corporation [ATE]
Aehr Test Systems [AEHR]
Aetrium Incorporated [ATRM]
Ambarella, Inc. [AMBA]
Amtech Systems, Inc. [ASYS]
Applied Materials, Inc. [AMAT]
ATMI, Inc. [ATMI]
Axcelis Technologies, Inc. [ACLS]

BCD Semiconductor Manufacturing Limited
Brooks Automation, Inc. [BRKS]
BTU International, Inc. [BTUI]

Cascade Microtech, Inc. [CSCD]
ChipMOS TECHNOLOGIES (Bermuda) LTD. [IMOS]
Cohu, Inc. [COHU]
Cree, Inc. [CREE]
Cymer, Inc. [CYMI]

Daqo New Energy Corp. [DQ]

eMagin Corporation [EMAN]
Enphase Energy, Inc. [ENPH]
Entegris, Inc. [ENTG]

GigOptix, Inc.

Intermolecular, Inc. [IMI]

KLA-Tencor Corporation [KLAC]
Kulicke and Soffa Industries, Inc. [KLIC]

Lam Research Corporation [LRCX]
LightPath Technologies, Inc. [LPTH]
LTX-Credence Corporation [LTXC]

Mattson Technology, Inc. [MTSN]
MaxLinear, Inc. [MXL]
Mindspeed Technologies, Inc. [MSPD]

Nanometrics Incorporated [NANO]
Nova Measuring Instruments Ltd. [NVMI]

Oclaro, Inc. [OCLR]

RDA Microelectronics, Inc. [RDA]
Reliability Incorporated [REAL]

Solitron Devices, Inc. [SODI]
Synopsys, Inc. [SNPS]

Teradyne, Inc. [TER]
Tessera Technologies, Inc. [TSRA]
Trio-Tech International, Inc. [TRT]

Ultratech, Inc. [UTEK]
United Microelectronics Corporation [UMC]

Veeco Instruments Inc. [VECO]