Red-Bag
Provides mechanical engineering services and software for the (Petro-)Chemical industry. Software include vessel and heat exchanger engineer and pipe class component calculations. Services range from the authority engineering, mechanical calculations, mechanical design & engineering, finite element analysis (FEA) and software development/supply. Supply of equipment includes pressure vessels, columns, reactors, heat exchangers, waste gas coolers and others Leverancier van mechanical engineering diensten, software voor de (Petro-)Chemische industrie. Diensten zijn voor overheidseisen, mechanische berekeningen, ontwerp & tekenen en software ontwikkeling. Levering van apparatuur bestaat onder anderen uit drukvaten, kolommen, reactoren en warmte wisselaars.
http://www.red-bag.com

Thermal and Mechanical Equipment Co.
Heat exchanger & mechanical equipment sales - shell & tubes, air coolers, plate & frames; oil coolers; gas & oil filters; separators, thermostatic bypass valves.
http://www.tmec.com

Camozzi SpA
Provides solenoid, pneumatic, manual, mechanical valves; fittings; filters; regulators and lubricators.
http://www.camozzi.com

Tyder Ltd
Provides digital filter design software which can produce specialised filters e.g. Windowed FFT, Optimal FIR filters, and IIR filters.
http://www.tyder.com/

Simple Filters
Easy to use filters for enhancing Photoshop and Paintshop Pro - Not available anywhere else!!!
http://www.btinternet.com/~cateran/simple/

Simple Filters
Easy to use filters for enhancing Photoshop and Paintshop Pro - Not available anywhere else!!!
http://www.btinternet.com/~cateran/simple/

OPT Hellas Custom Frequency Control Components
Manufacturers crystals, crystal filters, lc filters rf and microwave filters. Descriptions and catalogs and international sales network.
http://www.opthellas.com

Reclaim filters and system, Inc.
Reclaim Filters brings you reliable and economical solution to your basic filtration needs. Clean and recover your water with our filters and filter systems. Based in Wake Forest North Carolina
http://www.waterreclaim.com/

DG Environmental Ltd. (DGE China)
Products include scrubbers, fabric filters, electrostatic precipitators, and mechanical collectors. Site includes product and company information.
http://www.dg-e.com

Kemo Signal Filters
Electronic filters, a full range of systems and modules
http://www.kemo.com/