... strength,over 10years service time 4CCC,CE,ISOcertificate 1, JHF-400A greenhouse circulation fan for the three anti-tailored special motor, ... price discount. 8, good after-sales service commitment: This machine has stable operation, high efficiency, low noise, energy province, ... . Motor quality problem in the 2 years free replacement machine directly, the whole quality problem within 1 year warranty ...