Measurement instruments specialized for continuous temperature recording and monitoring in manufacturing sites. Automatically records temperature history of heat treatment processes, drying ovens, constant temperature baths, refrigeration equipment, etc., ensuring quality control and traceability. Includes chart recorders, digital data loggers, wireless recorders, multi-point temperature recorders, etc. Unlike single-measurement thermometers, features time-series data accumulation and analysis capabilities. Positioned as essential equipment for manufacturing quality assurance systems with abundant ISO certification and FDA regulation compliant models.