All assembled printed circuit boards must be produced with UL-listed basic materials under the QMTS2 standard. Construction parts / components which are marked as Ex-relevant in the bills of materials must be ordered and fitted exclusively in accordance with the data sheets / bills of materials / mounting instructions that have been approved by BARTEC. The Ex-relevant construction parts / components must be supplied by the sup-supplier to Winmate with a factory certificate in conformance to EN 10204 2.2 and checked for identity and if applicable for quality characteristics. The documents shall remain with Winmate and their retention is mandatory in accordance with Annex 2.