- PTR Optic
- Address:UK
- Vision Science Ltd
- Address:Unit 7, Stow Court, Stow Road Cambridge, Cambridgeshire
- PG Instruments Limited (Beijing)
- Address:ALMA PARK, WIBTOFT, LEICESTERSHIRE, LE17 5BH, ENGLAND
- Precision Optic
- Address:Brockweir
- O-Net Trade Service
- Address:Po Box 787
- Litetec Ltd
- Address:507 Ashingdon Road
- Durro Trade
- Address:111 Romford Road London, Londo
- NanoMagnetics Instrument
- Address:Suite 290 266 Banbury Road
- Quality Control Instrument
- Address:193 Market Street
- SNOWDEN LIMITED
- Address:165 Rutland Road
- PCE Instrument
- Address:Units 12/13 Southpoint Business Park Ensign Way, Southampton, UK,SO31 4RF
- Visualeye
- Address:1 St Magnus St, Lerwick, Shetland, UK,ZE1 0JT
- Hoonite Ltd
- Address:20-22 Wenlock Road
- PTR Optics LTD
- Address:Bio City, Pennyfoot Street Nottingham Nottinghamshire NG1 1GF United Kingdom
- dessards
- Address:4 millbank
- ITH
- Address:
- VG & CO
- Address:FLAT 20 BRIDGE COURT,13 NEWPORT AVE
- PTR Optics
- Address:UK
- SENTRIPOD CO LTD
- Address:Honeystone Lodge, 13, The Hamlet, Chippenham
- GarethOptical Instrument
- Address:13 Nord Street