GDS is a global company based on Italy, who has 40 years' experience in electronic devices, their engineer team contacted us via email and ultimately selected us as the supplier of draught-proof enclosure after evaluating several solutions from different vendors, we thank you for the trusty and repay it with high-quality equipment. Draught-proof enclosure is a equipment applied to thermal test of luminaire under the conditions of normal operation and abnormal operation as per IEC60598-1 annex D. The draught-proof enclosure is rectangular, with a double skin on top and on at least three side, and with a solid base. The double skins are of perforated metal and sprayed with black matt paint, spaced approximately 150mm apart, with regular perforations of 1mm to 2mm diameter, occupying about 40% of the whole area of each skin. At the top of enclosure shall mounted a ceiling plate or a dismountable hanging bracket with a hook to fix the luminaire at the ceiling. At...