Applied Test Systems, Inc. Manufacturer of precise, affordable equipment for materials testing and process heating. http://www.atspa.com/

Heungjin Testing Machine Co Ltd Specialist manufacturer for asphalt testing machines. http://www.heungjin.co.kr/

Lab Quip Supplier of laboratory testing equipment for aggregates, asphalt, concrete and soils. http://www.lab-quip.co.uk/

Interlaken Technology Manufacturer of precision testing machines for use in the asphalt, soil, metal, formability, hydroforming, and lubrication markets. http://www.interlaken.com/

Mastrad Supplier of asphaltic paving materials testing machines. http://www.mastrad.com/nat.htm

Pavement Technology, Inc. Asphalt testing and sampling equipment for the hot mix asphalt and aggregate industries. http://www.pavementtechnology.com/

Troxler Electronic Laboratories, Inc. Develop, manufacture and supply of quality control and measurement equipment for the asphalt and concrete construction testing laboratory. http://www.troxlerlabs.com/

ELE International Ltd Manufacturers of equipment for concrete, soil, geotechnical, asphalt and environmental testing and monitoring. Technical services for installation and training. http://www.eleint.co.uk/

Ye Chance Manufacturers of equipment for concrete, soil, asphalt testing. http://www.yechance.com.tw/

Walter and Bai AG Testing Machines Testing Machines, Instruments and equipment for cement, concrete, soil, asphalt a.s.o testing http://www.walterbai.com/

GeoSales The Geotechnics Impact Tester. Geotechnics now offer a less expensive option to the Clegg Impact Tester, for quality control. http://geosales.co.nz/impacttester.html

Zeta Potential instruments, inc. Software and hardware to view and measure 0.2 micron particles in stable or unstable colloidal systems. http://www.bioresearchonline.com/ecommcenters/zeta.html