FAQ 1. Do you accept credit cards? 2. How do you process tax-exempt purchases? 3. Do you provide warranties or returns? 4. How do you process international currencies, shipping and applicable customs and duties? 5. Do the U.S. international import/export regulations apply to your products? Technical 6. How do thermoelectric coolers (TECs) work? 7. How do thermoelectric generators (TEGs) work? 8. What do the thermoelectric parameters Imax, Vmax, dTmax and Qmax mean? 9. What do the TEG parameters mean? 10. What simple test can I use to verify that my TEC is operating correctly? 11. What does a thermoelectric system offer over a compressor? 12. What is the best way to power and control a TEC? 13. How big can you make a thermoelectric cooler in length and width? What limits the size? 14. How efficient is a thermoelectric cooler? 15. How do you mount thermoelectrics? 16. Is II-VI Marlow exploring new ways to improve thermoelectric performance and efficiency? 17. Do you have any stocking distributors? 18. What does your nomenclature -01, -02, -03, and AC, BC, AB, AN mean?