- ACET
- AMGN
- AN
- ANAC
- ARMH
- ATRS
- BIOC
- BWA
- CANV
- CHIE
- CHU
- CLS
- CMT
- CMU
- CTCT
- CUPM
- DAVE
- DCMT
- DIRT
- DXD
- EBSB
- EDRG
- EFNL
- ELD
- EQST
- EVAL
- EVI
- FDNB
- FEO
- FLPC
- FNB
- FRF
- FRME
- FRP
- GOGO
- GORO
- HAFC
- HEDJ
- HMH
- HRS
- HTD
- HY
- ICOL
- ITMN
- IYW
- LD
- LINE
- LIVE
- LMCA
- LNG
- MAJCQ
- MCA
- MEP
- MOV
- MRVC
- MSD
- MTSN
- MYRG
- NCV
- NMI
- NMT
- NXC
- NXK
- NXOI
- OCRX
- ORI
- ORRF
- PID
- PLLX
- PSCT
- PWC
- QEH
- RALS
- RTH
- SABR
- SCSS
- SXL
- SYKE
- SYMX
- TIRTZ
- TSLX
- TYO
- TZOO
- VFL
- VRML
- VXUS
- XON
Industrial Goods > Pollution Treatment Controls:
- Greenhunter Resources, Inc. (GRH)
- Seychelle Environmental Techno (SYEV)
- Sionix Corp. (SINX)
- Rino International Corporation (RINO)
- Liqtech International, Inc. (LIQT)
- Pacific Sands Inc. (PFSD)
- N-viro International Corp. (NVIC)
- Mpm Technologies Inc. (MPML)
- Mfri Inc. (MFRI)
- Energy Recovery, Inc. (ERII)
- Midwest Energy Emissions Corpo (MEEC)
- Federal Signal Corp. (FSS)
- Heritage-crystal Clean Inc (HCCI)
- Donaldson Company, Inc. (DCI)
- Terralene Fuels Corporation (GSPT)
- Clarcor Inc. (CLC)
- Fuel-tech Inc. (FTEK)
- Ceco Environmental Corp. (CECE)
- Tennant Company (TNC)
- Eau Technologies, Inc. (EAUI)
- Euro Tech Holdings Company Lim (CLWT)
- Calgon Carbon Corporation (CCC)
- Bion Environmental Technologie (BNET)
- Beesfree, Inc. (BEES)
- Advanced Emissions Solutions, (ADES)
- Blue Earth Inc. (BBLU)
- Clean Diesel Technologies Inc. (CDTI)
- Awg International Water Corpor (AWGI)
- Amanasu Environment Corp. (AMSU)
- Adarna Energy Corporation (ADRN)
- Abtech Holdings, Inc. (ABHD)
- Uv Flu Technologies, Inc. (UVFT)
- Clearsign Combustion Corp. (CLIR)
- T5 Corp. (TFIV)