... ;(2) Plate-grid structure, fluid heated in the copper pipe with faster heat transfer; (3) Working with pressure, better stagnation performance ... and long life span.2. Advantages of JB flat plate solar collector(1)Blue titanium coating, with high absorptivity 93±2% and ... , life span 50 years;(2)Special design structure, 360°heat transfer, excellent thermal conductivity;(3)Optical low iron tempered glass ...