ESPEC (エスペック株式会社) is a company that manufactures environmental test chambers. It offers thermal shock chambers, highly accelerated stress test (HAST) chambers, highly accelerated life testing (HALT) and highly accelerated stress screening (HASS) test chambers, flat-panel display (FPD) equipment, energy device equipment, fuel cells evaluation systems, etc. The company also provides after-sales, construction-around equipment, laboratory testing, resale, rental, and calibration services. ESPEC caters to electronic, automobile, semiconductor, pharmaceuticals, and other markets.