contractually committed (Form 4.6.4). The evidence must include successful  experience as the prime contractor in construction of projects referred under  12.2.1.3. of the same nature and complexity comparable to the works  concerned by the tender during the last five years (i.e. 60 months prior to  deadline for submission of tenders);   information regarding the proposed main site office (Form 4.6.3);   an outline of the quality assurance system(s) to be used (Form 4.6.7).   if  applicable,  information  on  tenderers  involved  in  a  joint  venture/consortium (Form 4.6.5);   details of their litigation history over the last five years (Form 4.6.6);   details of the accommodation and facilities to be provided for the Engineer  (Form 4.6.8);   eligibility statement (Form 4.6.9)   technical solution for lot-1 (Form 4.6.10)   further information (Form 4.6.11).  12.1.10.  Proof documents, declarations and undertakings according to Clauses 3.1-3.6 above.  These documents should cover all members of a joint venture/consortium and all  subcontractors as specified.  12.1.11.  Unless otherwise provided in the contract, all goods purchased under the contract must  originate in a Member State of the European Union or in a country or territory of the  regions covered and/or authorised by the specific instruments applicable to the  programme specified in clause 3.1 above. However, they may originate from any country  when the amount value of the supplies and materials to be purchased is below EUR  100,000. For these purposes, ‘origin’ means the place where the goods are mined, grown,  produced or manufactured and/or from which services are provided. The origin of the  goods must be determined according to the relevant international agreements (notably  WTO agreements), which are reflected in EU legislation on rules of origin for customs  purposes: the Customs Code (Council Regulation (EEC) No 2913/92) in particular its  Articles 22 to 26 thereof, and the Code's implementing provisions (Commission  Regulation (EEC) No 2454/93.  12.1.12.  Modifications (if any);  12.1.13.  Tender security, using the form provided in Volume 1, Section 3; 12.1.15.  Pay slip of purchasing tender documents   12.1.16.  Signed copy of the first page in Vol. 2 Section 2 (FIDIC General conditions).  Through their tender submission form, tenderers must provide an undertaking signed by their  representative certifying compliance with this requirement. The tenderer is obliged to  verify that the provided information is correct. Otherwise, the tenderer risks to be  excluded because of negligently misrepresenting information. For more details, see  Section 2.3.5. of the practical guide.  -For Lot 1, FIDIC Conditions of Contract for Plant and Design-Build for Electrical and  Mechanical Plant and for Building and Engineering Works Designed by the Contractor  (Yellow Book First Edition 1999) published by the Federation Internationale Des  Ingenieurs-Conseil (FIDIC) and Page 10 of 23  August 2020 d4b_itt_en 