1. Cryogenic Biology Storage System by Automatic control（CBSS-1）features : ① Central managed by the central control room; Monitor, record and print the original data immediately, and realize the remote control of liquid nitrogen complement for each freezer automatically or manually. ② Each liquid nitrogen storage dewar design a control system independently, which is made up of two independent subsystems----liquid level measurement and temperature measurement, to improve the security of samples. ③ Windows operator interface display the performance of inside liquid nitrogen for each freezer visually. ④ Managed by industrial PC machine, can realize long-distance transmission，support SMS wireless remote alarm, and share LAN resource . ⑤ Equipped with stand-by power to avoid equipment failure caused by power off. ⑥ High-quality shielded cable realizes remote data circuit detection; It will send alarm signal if monitor and control system become abnormal, double protection to verify equipment operate properly. ⑦ Equipped with hypoxia alarm system inside the storage. It will open exhaust system automatically to regulate indoor air if the indoor oxygen concentration is too low. ⑧ Sensors and liquid filling system have been carefully considered when designing container, beautiful appearance and ingenious structure . ⑨ Pipeline system uses high-vacuum multi-layer insulation cryogenic pipe，low nitrogen losses and designed according to house structure, compact structure, beautiful appearance, simple operation and easy to manage. ⑩ Liquid nitrogen source uses multi-layer insulation storage tank, low static liquid nitrogen evaporation rate ,safe and reliable. 2. Cryogenic Biology Storage System for laboratory (CBSS-2) features: ①Measure and control liquid level inside liquid nitrogen storage tank automatically. ②High/low threshold-crossing sound and light alarm, sensor fault alarm and parameter setting fault alarm. ③Control methods are divided into two forms of temperature control and liquid level control , which are selected by customers. ④Measure the liquid nitrogen level inside rehydration tank automatically; Sound and light alarm warn that the liquid nitrogen will run out. ⑤Stable high vacuum multi-layer insulation design ,low Static liquid nitrogen evaporation losses, economical use ect. ⑥Equipped with square plastic boxes inside storage tank, specifically designed for centrifuge bottle storage. ⑦Carrying cart(optional), for convenient transferring indoors. ⑧Safe and reliable storage of biological samples，more than five-year vacuum quality guarantee