WE PROMISE:
1. The service life of liquid nitrogen containers are designed for 8-10 years, during 12 months after receive products, our company is responsible for new replacement if there are any quality questions unartificial.
2. We would change new products if containers are found frozen waters or frost on surface when first time to fill liquid nitrogen. ( Note please, it is normal phonomenon if there is some frost on neck cover for a short time when fill in liquid nitrogen)
3. We  build users record  for each customer, containers will enjoy life-long technical service with warranty cards or transaction record when maintain and replacement .
 
Whether you store vials of frozen cell stocks in dewars or cryogenic refrigerators or require transportation proof LN2 containers, PCHAO brings you the highe quality and most reliable series of cryogenic storage systems in the market. Xinxiang Pan Chao Instruments Co., Ltd. makes every effort to provide PCHAO customers globally with service of Time Saving and Affordable technology!