... lamp, life span longer than 9000 hours, replaceable and easy to use. Specifications:1,The shell is ... of the tube. The shell is radiance-proof and anti-corrosive.2. Each shell comes with an ... less than 8T/H,ballast is built-out and without electric box;For water flow rate more ... ballast, the timing device, operation light indicator, power switch and light signal will all be supplied.4,Pressure Bearing ...