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R W Holland	O
R&M Energy Systems	O
R&W	O
R. & E. Martin Chemicals	O
R. Baker & Son	O
R. C. Costello & Assoc., Inc. (**)	O	O	O
R. Stahl Schaltgeraete GmbH	O
R.A. Far East Engineering	O
R.A.S. Process Equipment, Inc.	O
R.C. Electronics	O
R.P. Adams	O
RABNet	O
RACO Manufacturing and Engineering	O
Radco Industries	O
Radiometer Analytical	O
Radleys Discovery Technologies	O
Radolid Thiel	O
RAE Systems	O
Rain For Rent	O	O
Raisio Group	O
Raj Kumar A T	O
Ralston Instruments	O
RAM Environmental Technologies	O
RAMA Fabrication	O
Ramco Manufacturing Co.	O	O
Ramgen Power Systems, Inc	O
Ram-Nath & Co. Pvt Ltd	O
Ramsay Group	O
Ramsey	O
Rapat Corporation	O
Rapid Engineering, Inc.	O
Rapra	O
RASA	O
Raschig	O
Rath Manufacturing Co., Inc.	O
Ratson	O
Raucell Oy	O
Rauschert Industries, Inc. (**)	O
Raychem Corporation	O
Raymond Professional Group	O
Raypak	O
Raytek	O
RBH Pigment Dispersions	O
RBP Chemical Cor	O
rcc.ru	O
RCD Engineering	O
RCGRD	O
RCI Actuators	O
RCM Industries, Inc.	O
RCM Technologies	O
Rd Chemical	O
RdF Corporation	O
RDP Technologies	O
Reactec	O
Reaction Design Inc.	O
Reactive science news	O
Reactor Services International (RSI)	O
Readco Manufacturing, Inc.	O
ReadcoInc.	O
Reade Advanced Materials (**)	O
Reading Technologies, Inc.	O
Reality Capture Technologies	O
Reaxa Ltd	O
REB Research & Consulting	O	O
Rebis	O
Rechner Electronics Industries Inc.	O
Recicladora Temarry de Mexico	O
Recirculation Technologies	O
RECO USA	O
Recold	O
Rectus GmbH	O
RecycleNet Corporation	O
Recycler's World	O
Red Ewald, Inc.	O
Red Lion Controls	O
Red Valve	O
Red Wing Technologies, Inc.	O
Redondo Filtration Systems	O
Red-White Valve Corporation	O
Reed Manufacturing Company	O
Reef Industries	O
Reelcraft Industries, Inc.	O
Refinaria de Petroleos de Manguinhos	O
Refineries in India	O
Refineries of Africa (**)	O
Refinery Automation Institute	O
Refinery Reform Campaign	O
Refinery Supply Co.	O
Refining Online®	O
Refining Process Services, Inc.	O
refractory.net	O
refractorydepot.com	O
Refractron Technologies Corp.	O
Refron, Inc.	O
Regal Industries	O
Regenesis	O
Regenesys Pty Ltd	O
Regis Machinery	O
RegScan	O
Regulateurs GEORGIN	O
Reheat Co., Inc.	O
REICA	O
Reichhold	O
Reiken, Inc	O
Reilly Industries	O
Reimelt Corp.	O
Reinforced Plastic Systems inc.	O
Reiss Manufacturing, Inc.,	O
Reliability Center, Inc	O	O
Reliability Knowledge-network (**)	O
Reliance Silicones (India) Ltd.	O
RELIASS	O
Relsoft S.A..	O
REM Engineering Services	O
Rema Tip Top	O
Rembe GmbH	O
Remco Engineering	O
Remcon Plastics	O
Remke Industries	O
REMOSA spa	O
Remote Control Sweden AB	O
Remote Ocean Systems, Inc. (ROS)	O
Remspec Corporation	O
Renewable Energy Manufacturers	O
Renewable Energy Project	O
Renewable Fuels Assn.	O
Renold Clutches & Couplings	O
Renold PLC	O
Rentech, Inc.	O
REOLOGICA Instruments	O
Reotemp	O
Repsol, S.A.	O
Resampling Stats	O
Research Engineering Inc.	O
Resin Surfaces Limited	O
Resinall Corporation	O
Resinex & Ravago	O
ResinTech Inc.	O
Resintech Inc.	O
ResinTech Inc.	O
Resistoflex	O	O
Resolution Integration Solutions	O
Resources & Systems Intl	O
Respirometry Plus	O
Restek Corporation	O
Retsch Inc.	O
Retsco Ltd	O
Rev Tech LC	O
Revak Turbomachinery Svc.	O
Revere Copper Products	O
Revere Products	O
Revex Technologies	O
Revtech	O
Rexnord	O
Reynolds Industries	O
Reznor	O
RF Valves	O
RGF Environmental Systems Inc.	O
RHE America	O
Rheodyne	O
RheoTec Meßtechnik	O
RHEWUM GmbH	O
RHI Refractories (**)	O
Rhine Ruhr Pty. Ltd.	O
Rhino Linings USA®	O
Rhodia	O	O
Rhodia Organique Fine Ltd	O
Rhodia Silicones	O
Rhodia-Eco-Services	O
Ribelin Sales	O
RICE Hydro	O
Rice Lake Weighing Systems	O
Richard Scientific	O
Richards Industries	O
Richman Chemical	O
Richway Industries	O
Rickly Hydrological Company	O
Ridge Tool Company	O
RIELLO S.P.A.	O
Riera Nadeu S.A.	O
Rietschle Thomas Hanover, Inc.	O
Rifox	O
Rigal Bennett Group	O
Riggers Manufacturing	O
Rigging Management Systems	O
Riggins Company	O
RigMatch	O
Ringfeder Corporation	O
Rino Equipment Inc	O
Rio Tinto Borax	O
Ripamonti y Cia.	O
Rishroop Polymers	O
Risk Logic Inc. (**)	O
Risk, Reliability and Safety Engineering	O
Ritchie Industrial Marketing	O	O
Rittal Corporation	O
Rittmeyer Instrumentation	O
River City Engineering (RCE)	O
Rivit S.p.A.	O
RIX	O
RJ Associates (Engineers) Pvt. Ltd.	O
RJ-Lnxx	O
RJM Corporation	O
RKC Instruments	O
RKI	O
RKL Controls	O
RMB Products, Inc.	O
RMS Engineering Inc.	O
RMT Engineering	O
RNI Technologies	O
Roadway Express Online	O
Robatel Inc.	O
Robco Inc.	O
Roberts Filter Group	O
Robertshaw IPD, An Invensys Co.	O	O	O	O
Robicon	O
Robinson Brothers Ltd	O
Robinson Industries, Inc.	O
Robinson, D.B. & Associates (**)	O	O
Robolux	O
Robotics, Inc.	O
Robt. Stone & Co.	O
ROBU Glasfilter-Geraete GmbH	O
Robur Corporation	O
Robuschi SpA	O	O	O
ROC Carbon Company	O
Rockwell Automation	O
Rockwood Specialties	O
Rockwood Swendeman	O
Rocky Mountain Institute	O
Rocky Mountain Laboratories	O
RODA Chemical Products	O
RODI Systems Corp	O
Rohm & Haas	O	O	O	O	O
Rohm & Haas Powder Coatings	O
Röhm America Inc.	O
RohMax Additives GmbH	O
Rohrback Cosasco Systems, Inc. (RCS)	O
Rokita S.A.	O
Rolled Alloys (**)	O
Rolls Royce	O
Romaco	O
Romag AG	O
Rompetrol	O
Ronan Engineering	O	O
RONK Electrical	O
Röntgen Technische Dienst bv (RTD)	O
Ron-Vik	O
Roots Systems Ltd	O
Roper Pump	O
Roplan AB	O
Ropur	O
Rose Mill Co.	O
Rose+Bopla	O
Rosedale Products	O
Rosemount	O
ROSEN Group	O
Rosen Inspection Technologies (RIT)	O
Rosenmund	O
Ross Cook	O
Ross Systems, Inc.	O
Ross Technology Corp.	O
Rotabolt Ltd	O
Rotaflow FV Ltd	O
Rotary Engineering Limited	O
Rotating Machinery Services	O
Rotating Machinery Technology, Inc.	O
Rotator AS	O
Rotex	O
Roth Container Systems	O
Roth Pump	O
Roto Hammer Industries	O
Roto-Disc Company	O
Rotolok	O
Rotordynamics Seal Research (RSR)	O
Rotork Control and Safety	O
Rotor-Tech Inc.	O
Rotronic Instrument Corp.	O
Roura Iron Works	O
Row, Inc.	O
Roxar	O
Roxtec International AB	O
Royal Chemical	O
Royal Enterprises America	O
Royal Guard Corp.	O
Royal Liner	O
Royal Lubricants	O
Royal Purple Inc.	O
Royal Society of Chemistry	O
Royal Vopak	O
Royce Instrument Corp.	O
Royce Technologies	O
RPA Process Technologies	O
RPM Inc.	O
RPP Corp. (**)	O
RS Hydro Ltd	O
RSCC Heat Trace	O
RSE Projects Water Purification	O
RSI	O
RSI - Remediation Service, Int'l	O
RSI (France)	O	O
RTG Thermal Spray Coatings	O
RTI International Metals	O
RTP Environmental Associates	O
RTW Engineering	O
Rubber Fab Technologies Group	O
Rubber.com	O
Ruberg-Mischtechnik	O
Rubicon Industries Corp.	O
Rubotherm	O
Rueger SA	O
Ruffneck Heaters	O
Ruhrpumpen Inc.	O
Rupprecht & Patashnick Co., Inc.	O
Rupture Pin Technology	O
Rush Gears Inc.	O
Ruska Instrument Corporation	O
Russelectric	O
Russell Finex Ltd	O
Russell-Stanley	O
Russwurm Ventilatoren GmbH	O
Rust-Oleum	O
Rutgers Organics GmbH	O
Ruwac	O
R-V Industries	O	O
RWD Technologies	O
Ryan Herco Products Corp.	O
RyanHerco Fluid Flow Systems	O
Ryerson Tull, Inc.	O
Ryson International	O
S & B Engineers and Constructors	O
S&G Enterprises	O
S. Himmelstein and Co.	O
S. Howes Co., Inc.	O
S.G. Frantz	O
S.G.Enterprises	O
S.T. Japan Inc.	O
SA Ex Instruments	O
Saab Tank Control	O
Saacke	O
Sabic	O
Sabin Metal	O
Sabrex, Inc.	O
Sachem	O
SADE Skanska	O
Safe Harbor Access Systems	O	O
Safer Systems	O
Safety Equipment Manufacturers	O
Safety Storage, Inc.	O
Safety Tech Igniters	O
SafetyCare	O
SafetyInfo.Com	O
Safety-Kleen Oil Recovery	O
Safeware, Inc	O
SAF-T-FLO	O
Saftronics Inc.	O
Saga Petroleum	O
Sagebrush Pipeline Equipment Co.	O
Sahara Air Products	O
Sahut-Conreur	O
SAI Analyzers	O
Saia-Burgess Group	O
SAIC	O
Saint-Gobain Ceramics	O
Saint-Gobain NorPro	O	O	O	O
Saint-Gobain Performance Plastics	O
Saint-Gobain ZirPro	O
Saip s.r.l.	O
SAIPEM	O
Salina Vortex® Corporation	O
Salmatec	O
Salzgitter Anlagenbau GmbH	O
Sampling Systems by PMMI, Inc.	O	O
Samson AG	O	O	O
Samsung Fine Chemicals Co.	O
Samsung General Chemicals Co., Ltd	O
Samsung Petrochemical Co., Ltd.	O
Samsung-BP Chemicals Co., Ltd.	O
Samuel Specialty Metals	O
San Diego Plastics, Inc.	O
San Joaquin Refining Co., Inc.	O
Sanborn Technologies	O
Sandblasting Equipment Manufacturers	O
Sanders Equipment Co.	O
Sandia National Laboratory	O
Sandiford Computer Services Ltd.	O
Sandmeyer Steel Company	O
Sandur Fluid Controls	O
Sandvik Process Systems	O
Sandvik Steel	O	O
Sanghvi Forging & Engineering Limited (SFEL)	O
Sani-Matic	O
Sanitaire	O
Sanzheng Polymer Material Co.	O
SAP AG	O
SARAS	O
Sargeant Bulktainers	O
Sarpom	O
Sartomer Company	O	O
Sartorius	O	O
Sasol (**)	O	O
Sasol Olefins & Surfactants GmbH	O
SAST	O
Satake Chemical Equipment Mfg.	O
Sator Laser GmbH	O
Saudi Aramco	O
Sauereisen	O
Saurin Group	O
Savan	O
SAVE International	O
Savi Technology	O
Savino Barbera	O
Savona Equipment Ltd	O	O	O	O
SAWA	O
Saybolt Metrology BV	O	O
Saylor-Beall Manufacturing Company	O
SCA Packaging North America	O
Scale Free International	O
Scales Manufacturers	O
Scaltech	O
Scana UK	O
Scanivalve	O
Scanning Technologies	O
Scan-Sense AS	O
SCC Industries	O
Schaevitz	O
Scheerle AG	O
Schenck Trebel	O
Schenck Weighing Systems	O
Schierle Tubes	O
Schmalbach-Lubeca AG	O
Schmiedl Metall- & Fördertechnik	O
Schmierer GmbH	O
Schmitt Kreisel Pumpen	O
Schneider Electric	O
Schneider Leichtbau	O
Schniewindt	O
Schoeller-Bleckmann Nooter	O
Schreiber Water	O
Schubert & Salzer	O
Schudel AG	O
SchuF	O
Schumacher Elevator Co.	O
Schumacher-Filters	O
Schutte & Koerting	O
Schutte Pulverizer Company	O
Schütz	O
Schweitzer Engineering Laboratories	O
Schwing Fluid Technik BV	O
Schwing GmbH	O
Science & Engineering Encyclopaedia (**)	O
Science Applications International Corp.- SAIC	O
Scientific Design Company, Inc	O	O
Scientific Dust Collectors	O
Scientific Glass and Instruments, Inc. (SGI)	O
Scientific Instrument Services	O
Scientific Machine & Supply Co.	O
Scientific Plastics, Inc.	O
Scientific Software Inc.	O
Scientific Technologies Inc	O	O
SciLog	O
Scimcon	O
SciVision	O
Scorecard	O
Scotmas Group	O
Scott Equipment Company	O
Scott Health & Safety	O
Scott Specialty Gases (**)	O
Scott Turbon Mixer	O
Scott/Bacharach Instruments	O
Screen Technology Group, Inc.	O
Screw Conveyor Corporation	O
Scully	O
SDC Technologies	O
Sea Lion Technology, Inc.	O
Seal Chemical Industries	O
Seal Master Corporation	O
Sealant Equipment & Engineering	O
SealantSource.com	O
Sealing Devices, Inc.	O
Seals Manufacturers	O
Seaman Corp.	O
SeaMetrics Inc.	O
SeaWest WindPower	O
SEC Heat Exchangers	O
SEC Plate and Frame Heat Exchangers	O
Secespol of Canada Corp.	O
Seco/Warwick Corporation	O
Secura B.C.	O
SECURALL Cabinets, Inc.	O
Sedae Kisan Co.	O
Seebach	O
Seegott	O
Seepex	O
Sefar Holding Inc.	O
SEI, Inc.(Scientific Environmental Instruments)	O
Seiler Verfahrenstechnik	O
Seko Bono Exacta Spa	O
Selas Fluid Processing Corporation (SFPC)	O
Selas Heat Technology Company	O
Selig Industries	O
Sellers Cleaning Systems	O
Sellick Equipment	O
Selltis	O
SembCorp Industries	O
Semco TBS	O
SEMI-BULK Systems	O
Seneca Environmental	O
Senior Flexonics Inc.	O
Sensa	O
Sensidyne	O
Sensirion	O
Sensistor Technologies AB	O
Sensitron Srl	O
Sensoplan	O
Sensor Electronics Corporation	O
Sensor Products Inc.	O
Sensorex	O
Sensors magazine (**)	O
Sensortechnics GmbH	O
Sensortechnik Meinsberg	O
Sensotec, Inc.	O
Sentech	O
Sentinel Laboratories	O
Sentron Europe BV	O
Sentry Equipment Corp. (**)	O	O
Separex	O
Sepcor, Inc.	O
Septimus	O
Sequencia Corporation	O	O
Sequoia Engineering	O
Serail	O
Serfilco Ltd.	O	O	O
Serfinc	O
Sermatech International Inc.	O
Serpentix Conveyor Corporation	O
Serto	O
service management	O
ServoLift GmbH	O
Servolift LLC	O
Servomex	O
SET Laboratories	O	O
SETNAG	O
Seton	O
Setra Systems, Inc	O
SETTEC	O
Sevenson Environmental Services, Inc.	O
Severn Trent Services Inc.	O
SEW-Eurodrive	O
Seybert & Rahier GmbH (SERA)	O
SF Air Filtration	O
SFA Pacific	O
SGL Acotec GmbH	O
SGL Polycarbon	O
SGS Group	O
Shaffer Products	O
Shanghai Morimatsu	O
Shanghai Oil	O
Shanghai Sanzheng Polymer Material Co	O
Shanghai Yaohua Nano-Tech Co.	O
Shanley Pump & Equipment	O
Sharpe	O
Sharpe Mixers	O
Sharpe Valves	O
Sharplex Filters (India) Pvt Ltd	O
Sharpsville Container Corp.	O
Shat-R-Shield, Inc.	O
Shaw Group	O
Shelco Filters	O
Shell Chemical Company (**)	O	O	O	O
Shell Global Solutions	O	O	O	O	O	O	O	O
Shell Oil Group	O
Shepherd Chemical Co.	O
Sherbrooke OEM Ltd.	O
Sherwin Williams (**)	O
Shield Pack, LLC	O
Shimadzu Scientific Instruments	O
Shimpo Drives, Inc.	O
Shimpo Instruments	O
Shin-Etsu Chemical	O
Shinko Pantec	O
Shinko Plantech Co.,	O
Shiva Technologies, Inc.	O
Shobha Enterprises	O
Shore Chemical Company	O
Shortridge Instruments, Inc.	O
Showa Chemical Co., Ltd.	O
Showa Highpolymer	O
Shuang Yeong Co., Ltd.	O	O
Shurflo	O
SI Pressure Instruments	O
SIAD	O
Sias AG	O
SICK AG	O
Sick Maihak GmbH	O
Sicon Oil and Gas	O
Sicon Roulunds	O
Sicpa	O
Siderca	O
Sidewinder Pumps	O
Siebel Energy	O
Siebtechnik GmbH	O
SIEFER	O
Siemens	O
Siemens (ELMO)	O
Siemens Axiva	O
Siemens Energy & Automation	O
Siemens Westinghouse	O
Siemens/Compex IT Plant Solutions	O
Sierra Instruments	O
Sierra Monitor Corp.	O
Sievers Instrument	O
Sifco	O
SIFCO Flanges	O
SIG Doboy	O
Sigma Coatings	O
Sigma Controls, Inc.	O
Sigma Corp. (**)	O
Sigma Design Company, LLC	O
Sigma Equipment	O
Sigma-Aldrich Corporation	O
SiGNa Chemistry	O
Signature Control	O
Sigrist-Photometer AG	O
Siirtec Nigi Spa (**)	O	O
Silbrico	O
SILEO	O
Silo Clean International Inc.	O
Silobau Steinecke	O
Silverson Machines	O
Silverton Heat Exchange	O
Simatek	O
Simco	O
Simon Carves	O
Simpson Thomson Filtration	O
Simrit	O
Simsci Simulation Sciences	O	O
Simsmart Inc	O
Simtronics Corporation	O	O
Simulations Heat Transfer	O
Sinclair Group	O
Singapore Petroleum Company Limited (SPC)	O
Singleton Urquhart	O
Sinochem Hebei	O
Sinochem Wuxi	O
Sioux Steam Cleaner Corp.	O
SIPOS Aktorik	O
Sisu Group, Inc.	O
SITA Messtechnik	O
Sivento	O
SIXNET	O
SJB	O
SJE-Rhombus	O
SK Corporation	O	O	O
SKC Inc.	O
SKF	O
Skidmore Pump	O
SL Gas	O
Slack & Parr	O
Slickbar Company	O
Slideways	O
Sloss Industries	O
Slovene Petroleum Company	O
Sly Inc.	O
Smar International	O
Smart Products, Inc.	O
SmartDraw	O	O
SMARTEAM Americas Inc.	O
SmartSignal	O
SMB Bearings	O
SMC	O
SMC Corporation of America	O
Smico Mfg. Co. LLC	O
Smit Sinus	O
Smith & Loveless	O
Smith Fibercast	O
Smith Fiberglass Products	O
Smith Flow Control Ltd.	O
Smithco Engineering	O
Smitsvonk Holland B.V.	O
Smoot Co.	O
SMS International	O
Snamprogetti SpA	O
Snap-tite, Inc.	O	O
SNC-Lavalin	O
Snia Spa	O
Snyder Industries Inc.	O
SO.CA.P.	O
Société GMI	O
Society for Machinery Failure Prevention	O
Society of Chemical Industry	O
Society of Independent Gasoline Marketers	O
Society of Plastics Engineers	O
Society of the Plastics Industry	O
Society of Tribologists and Lubrication	O
SOCMA	O
Sofraser	O
SofTech, Inc.	O
SoftNoze	O
SoftPLC Corporation	O
Softrak Systems	O
Sohre Turbomachinery Inc.	O
Soilworks, LLC	O
Solar Turbines	O
Solarc	O	O
Solarmundo NV	O
Solartron	O
Solberg Manufacturing, Inc.	O
Solcoat Industries	O
Solhex	O
Solid-Liquid Separation	O
Solids Handling Technologies	O
Solimar Pneumatics	O
Solinst Canada Ltd	O
Solios	O
Soloco	O
Solomon Associates, Inc.	O
So-Low	O
Solpower Corp.	O
Soltec Corporation	O
Solucorp Industries Ltd. (**)	O
Solutia Inc.	O	O
Solutions Software Corporation	O
Solutions-IES	O
Solvadis Nederland B.V.	O
Solvay S.A. (**)	O	O
Solvay Solexis, Inc.	O
Solvent Resource Management Ltd (SRM)	O
Solvitol	O
Somarakis, Inc	O	O
Somerset Refinery, Inc.	O
Sonatrach Group	O
Sondex (UK) Ltd	O
Sonic Corporation	O
SONOSYS Ultraschallsysteme	O
Sonotec	O
Sopheon	O
SOR Inc. (**)	O
South Wales Filters	O
Southerland Associates	O
Southern Chemical Group, LLC	O
Southern Gas Association (SGA)	O
Southern Heat Exchanger Corporation	O
Southern Ionics, Inc.	O
Southern Petroleum Laboratories (SPL)	O
Southern Research Institute (SRI)	O
Southern Waste Information Exchange	O
South-Tex Treaters (**)	O
SouthWest NanoTechnologies	O
Southwest Research Institute (SwRI™)	O
Southwest Screens & Filters	O
Southwest Thermal Technology, Inc.	O
Southworth Products Corp.	O
Space-Ray	O
Spaltech International	O
sparesfinder.com	O
Sparkler Filters, Inc.	O
Sparling Instruments	O
Sparrow Corporation	O
Sparta Systems	O
Spartan Scientific	O
Spartanburg Stainless Products	O
Speakman Company	O
Spears Manufacturing Company	O
SpecChem Online	O
Special Metals Corporation	O
Special plastics	O
Special Projects International, Inc.	O
SpecialChem SA (**)	O
Specialty Coating Solutions (SCS)	O
Specialty Equipment	O
Specialty Steel Industry of N. America	O	O
Specialty Technical Publishers	O
Speck Pumps, Inc.	O
Spectra Gases	O
Spectral Data Services, Inc.	O
SpectraQuest, Inc.	O
Spectrex Corporation	O
Spectrex Inc	O
Spectro Analytical Instruments	O	O
Spectrocell	O
Spectron Global Coal Limited	O
Spectronics Corporation	O
Spectrum Controls	O
Spectrum Laboratories Inc	O
Spectrum Laboratory Products	O
Spee-Dee®	O
Spence Engineering Company (**)	O
Spencer Machine & Tool	O
Spencer Turbine Co.	O
SPEX CertiPrep	O	O	O
SPF Europe BV	O
Sphinx Technical Ceramics	O
SpillTech	O
Spiniello Companies	O
Spintek Systems	O	O	O	O
Spir Star® AG	O
Spirax Sarco Inc	O	O	O
Spirelf® System	O
Spiroflow Systems	O
Spitzer and Boyes, LLC	O
SPM Instrument AB	O
Sponsler Company	O
Spotfire	O
Spray Analysis and Research Services	O
Spray Drying Systems, Inc. (SDS)	O
Spraying Systems Co.	O
Spraymation®, Inc.	O
Sprayroq	O
Springer Co-ax Inc.	O
S-Products b.v.	O
SPSS Science	O
SPX Air Treatment	O
SPX Process Equipment	O
Squire-Cogswell/Aeros	O
SRI Consulting	O
SRIPT	O
SRS	O
SRS Crisafulli	O
SRS Engineering Corp.	O
SSI Equipment	O
SSOE, Inc.	O
SST	O
SST Systems, Inc.	O
ST Services.	O
St. Louis Pipe & Supply	O
Staatsolie Refinery	O
Stability & Handling of Liquid Fuels	O
Stable Micro Systems	O
Staclean™ Diffuser Company (**)	O
Stafford Manufacturing	O
Stahl-Armaturen PERSTA GmbH	O
Stahlin	O
Stainless Fabrication, Inc.	O	O
Stainless Valve Co	O
Stancor Pumps	O
Standard Alloys & Mfg.	O
Standard Filter Corporation	O
Standard Pump, Inc.	O
Standford Materials	O
Stanhope-Seta	O
Stanley Consultants Group	O
Stansted Fluid Power	O
Stansteel Asphalt Plant Products	O
Stantec	O
Star Scientific Glass Co.	O
Star Water Systems	O
Stargate International	O
Startech Environmental Corp.	O
STASTO Ing Stocker	O
StataCorp LP	O
Stat-Ease, Inc.	O
Statistix	O
Statoil	O
StatPoint, Inc	O
StatSoft (**)	O
Status Instruments	O
Staubli	O
Staveley Instruments	O
Stawag Biotech AG	O
STC-Engineering GmbH	O
Steadfast Equipment	O
Steam Link.com (**)	O
Stedman Machine Company	O
Steel & Forge (**)	O
Steel Plate Fabricators Association	O
Steel Tank Institute	O	O
Steelbelt Systems	O
Steetley Bentonite and Absorbents	O
Stein Seal Company	O
Steinhaus GmbH	O
stela Laxhuber GmbH	O
Stelform Engineering	O
Stella-Meta	O
Stelter and Brinck, Inc.	O
Stemmerich, Inc.	O
Stenflex Rudolf Stender GmbH	O
Stenner	O
Stepan Company	O
Stephenson Chemical Company	O
Steri Technologies	O
Steritool	O
Sterling Chemicals, Inc.	O	O
Sterling Fluid Systems - SIHI	O	O
Sterling Material Processing	O
Sterling Scale Company	O
Sterlitech Corporation	O
Sternvent	O
Steuby Manufacturing Company	O
Stevens Geomembranes	O
Stevenson Manufacturing Company	O
Stevenson Specialty Refractories	O
Steward Enterprise, Inc.	O
Steward Environmental Solutions	O
Stewart R Browne Manufacturing Co.	O
Stewart-Buchanan Group	O
STF	O
STI Technologies	O
Stirling Energy Systems, Inc. (SES)	O
STM Power Inc.	O
Stochos Inc.	O
STÖCKEL	O
Stoddard Silencers	O
Stone Bond Corp.	O
StoneL Corporation	O
Stonhard	O
Stork Materials Technology ...	O
Stork Turbo Blading	O
Stormceptor Canada	O
Stormwater Management Inc.	O
Straec Technologies	O
Strahman Valves Inc.	O	O
Straight Line Filter, Inc.	O
Strainrite Inc.	O
Strainsert Co.	O
Stranco Products	O
Strassburger Filter GmbH	O
Stratco	O	O
Strategic Minerals Corporation	O
Strategic Technology Institute (STI)	O
Strathkelvin Instruments	O
Stratus Engineering	O
Strem Chemicals	O
Stress Engineering Services, Inc.	O
StressTel	O
Strobic Air Corporation	O
Strongwell	O
Structural Integrity Associates	O	O	O	O
Structural Preservation Systems	O
Struthers Industries, Inc.	O
Sturtevant, Inc.	O
STV Group, Inc.	O
Süd-Chemie	O	O	O	O	O
Süd-Chemie Performance Packaging	O
Süd-Chemie Prototech	O
Sulfatreat (**)	O
Sullair Corporation	O
Sullivan-Palatek Inc	O
SulphCo, Inc.	O
Sulphur Experts Inc.	O
Sulzer Chemtech USA	O	O	O	O
Sulzer Metco (**)	O
Sulzer Pumps	O
Sulzer Turbomachinery Services	O
Sumitomo Chemical Co.	O	O	O	O
Sumitomo Heavy Industries	O
Sumitomo Seika Chemicals	O	O
Summit Filter Corporation	O
Summit Research Labs	O
Summit Training Source, Inc.	O
Sun Chemical	O
Sun Coast Chemicals	O
Sun Company, Inc. (SUNOCO)	O
Sun Engineering Services, Inc.	O
Sunco Powder Systems	O
Suncombe	O
Suncor	O	O
Sundyne Corporation	O	O
Sunjut	O
Sunkyong Engineering & Construction	O
Sunrise Systems	O
SUNTEC Environmental	O
Super Products Corporation	O
Super Radiator Coils	O
Superbolt, Inc.	O
Supercritical Fluid Technologies, Inc.	O
Superior Chemical	O	O
Superior Electric	O
Support Systems Intl.	O
Sure Flow Products LLC	O
Sure-Foot Industries	O
Surface Combustion	O
Surface Engineered Products	O	O	O
SurfaceWeb.com (**)	O
Surfactants Virtual Library	O
Sur-Loc, Inc.	O
Survey-2-CAD	O
SusChem.org	O
Sussman Electric Boilers	O
Sustaplast	O
SVF Flow Controls	O
Swagelok Company	O