- Vaccum tubes
- 2016-12-29 20:07
- 1.material of borosilicate glass 3.3, thickness 1.6mm2.bsorptive coating graded AL-N/AL, Vacuum5*10-3Pa3.absorptance92%(
- solar water heater
- 2016-12-29 20:07
- 1.material of inner tank chest is imported food grade SUS304/2B,Thickness1.2mm2.material of outer tank shell is imported