- www.eichrom.com
- Biosynth is a manufacturer of organic fine chemicals in the field of enzyme substrates, indole derivatives and specialty chemicals for microbiology, molecular biology, diagnostics, pharmaceutical industry, chemical industry, food and environmental testing.www.biosynth.com
- PMA is the trade association of the cast polyurethane processing industry, serving processors of polyurethane products, material and equipment suppliers, and independent agents.www.pmahome.org
- www.dastuart.com