D&M's High Voltage, Inc.
Manufacture specialty single and three phase transformers - high current, high voltage, zig-zag, phase shifting, autotransformers, isolation, rectifier, inductors, reactors, saturable reactors, and AC/DC power supplies.
http://www.dmshv.com/

J-KEM Scientific
Temperature Controllers, Vacuum Controllers, Combinatorial Reactors, Parallel Reactors, Robotics, Automation, Reaction Blocks, Custom Lab Equipment
http://www.jkem.com/

IAEA: High Temperature Gas Cooled Reactors (HTGR)
INIS, the International Nuclear Information System is the world´s leading information system on the peaceful uses of nuclear science and technology. INIS produces and disseminates a bibliographic database (available on the Internet and on CD-ROM) with abstracts, and produces and disseminates a unique collection of in scope full texts that are not available through the commercial channels.
http://www.iaea.org/inis/aws/htgr/

Inspec Corp
p84.com
http://www.p84.com/

High Temperature Adhesives
High temperature ceramics, epoxies and adhesives for industrial, electronic and structural applications
http://cotronics.com/

Valvtechnologies, Inc.
Valvtechnologies, Inc.- Metal Seated Isolation and Control Valves
http://www.valv.com

ME Schupp Industrial Ceramics GmbH
Our competence in association with ambitious high-temperature components like cermets, industrial ceramics and polycristalline fibre materials, with the main focus on temperatures from 1,300°C up to 1,900°C, as well as basic knowledge in electrical heating and thermal insulation for sintering and melting processes of anorganic materials like ceramics, precious metals and special galss as well as ceramic high-temperature adhesives and coatings are the basis of our success.
http://www.schupp-ceramics.com/

Temperature Data Systems
Sensitech is the leading provider of cold chain monitoring instruments, information and analysis that help to protect the freshness, efficacy and integrity of temperature-sensitive products.
http://www.temperaturedatasystems.com/

Chemical Kinetics and Thermochemistry Database for High-Temperature Materials Synthesis
Thermochemistry Database based on Bond Additivity Correction (BAC) Calculations
http://www.ca.sandia.gov/HiTempThermo/

Express Transformers & Controls Limited, Runcorn, Cheshire
Transformers up to 150kVA. Including reactors, inductors and ferrite (High Frequency) products also high voltage transformers, up to 80kVDC isolation and developing up to 60kVAC. From UK.
http://www.express-transformers.co.uk/