Roli GmbH , based in Basel, is a regionally active and specialized service provider focused on leak detection and waterproofing inspections for flat roofs . We support property developers, architects, facility managers, and insurance companies in the reliable analysis and maintenance of flat roof systems – from single-family homes to industrial buildings. With years of experience and the use of advanced technologies, we are a trusted partner for precise, non-invasive leak detection , technically sound inspection methods , and clear, structured documentation . Our guiding principle: Find the root cause – not just treat the symptoms . Our Core Services Flat Roof Leak Detection Using cutting-edge technologies such as moisture sensors, smoke tests, thermography, and electronic pulse systems, we locate weaknesses quickly and accurately – even in complex roof constructions. Waterproofing Integrity Testing For both new and existing buildings, we verify the performance of waterproofing systems before handover or use – with fully documented, protocol-based and independent testing procedures. Roof Inspection with Report We carry out structured condition assessments of flat roofs, including photo documentation and maintenance recommendations – ideal for damage prevention or decision-making in renovations. Expertise Across All Roof Types Experienced in cold roofs, warm roofs, inverted roofs, green roofs, and walkable/drivable roof systems. Who We Work With • Architects & General Contractors – for acceptance tests or quality assurance • Property Managers & Homeowners – for water damage diagnostics, leak assessment or renovation planning • Insurance Companies & Surveyors – for neutral and technical evaluations • Industrial & Commercial Clients – for routine roof checks and safety assessments Locally Rooted – Available Nationwide Our core service area includes Basel, Basel-Landschaft, Aargau, Solothurn, and the Northwestern Switzerland region. Upon request, we are also available throughout Switzerland. Flexibility, short response times, and clear communication are our daily standards. Why Roli GmbH? • Independent & Objective: We don’t sell sealing materials – we identify causes. • Technically Reliable: Use of professional-grade tools and methods • Documented & Transparent: You receive clear inspection reports, including testing protocols if needed • Client-Focused: Personal consultation, transparent process, and fair pricing Roli GmbH – We make flat roofs understandable. A hidden leak? We’ll find it – before it becomes expensive.

Office Bâle Securiton AG is a Swiss provider of alarm and security systems. As part of the family-run Swiss Securitas Group, the company is synonymous with commitment, innovation and partnership. Worldwide, Securiton is a qualified specialist in demanding technical fire protection, and sells its products via a global network of sales partners and affiliated companies. Within Switzerland, Securiton is a professional integrator, offering holistic safety and security solutions for fire protection, intrusion protection, access control, video surveillance, security management and mobile object protection. Securiton is represented in all regions of Switzerland with offices and sub-offices and has strong roots. Together with its customers, employees and partners, Securiton makes an important contribution to a safe and secure future. Quicklinks to products and services • Fire protection • Intrusion protection • Access control • Video security • Security management • Mobile object protection

Treventa AG – Your Dedicated Fiduciary Experts in the Heart of Basel At Treventa AG, we combine modern, efficient fiduciary services with personalized support and a digital-first mindset. As an innovative team, we offer tailored solutions for SMEs and individuals – from accounting and auditing to tax and business consulting. Our Services: • Fiduciary services such as accounting and annual financial statements using Abacus, Bexio, or other common software platforms • Limited audits • Business and tax consulting • Personalized advice focused on digital processes – straightforward, client-oriented, and solution-driven Why Choose Treventa? • Member of TREUHAND|SUISSE and EXPERTsuisse • Dedicated team with solid professional qualifications and a strong client focus • High level of digitization, efficient workflows, and a strong focus on modern software solutions Get in touch with us today to find out how Treventa AG can help drive your business forward. Together, we’ll shape the future – with clear ideas and customized solutions.

Being an international player in paints and polymers with high added value, the Mäder group offers its customers global and innovative solutions in demanding markets such as Aeronautics, Railways, Automotive and Building. Anxious to be able to meet the needs of these markets, Mäder puts innovation at the heart of its strategy and thus devotes 10% of its turnover to R&D. Its research, in partnership with universities, is particularly focused on bio-sourced raw materials, green chemistry and reducing the impact of its activity on the environment. Backed by the expertise of its 850 employees, Mäder is now present in Europe as well as in China and India in order to support its customers in their international development. The group specializes in the following processing sectors: Paints, coatings and varnishes • Coil coating technology • UV and EB technology • Railway • ACE • General Industry (machines, devices, special surfaces and applications) • Wind energy • Aerospace • Telecommunications • Plastics Gelcoats and Resins We develop and produce unsaturated polyester resins, gel and top coats, adhesive resins, filled fire protection resins and special resins including the necessary surface finishing products and technologies. Paint raw materials This business line produces standard resins and additives based on polycondensation chemistry. The product range includes modified and unmodified alkyd and polyester resins for various applications in the paint and coatings industry. Toll manufacturing We develop and produce tailor-made products on behalf of our customers: • radiation curing resins • paint raw materials • prepolymers

Floor Installations "We are your expert for flooring in residential, rental, and commercial spaces. Our clients include property owners and tenants of apartments, offices, hotels, hospitals, sports halls, or commercial spaces. With the same enthusiasm, we also perform repairs on existing floors. Our services include comprehensive consultation, substrate renovation, professional flooring installation, and proper maintenance. Our qualified floor and parquet layers specialize in the installation of: • Wooden flooring • Parquet • Laminate • Carpets • Cork • Linoleum • Rubber • Plastics • PVC floors We optimize your floor to fit your space, even with complex layouts or in need of renovation. Our services range from removing old floor coverings to sanding, complete reconstruction of substructures, and installing parquet, vinyl, carpet, or linoleum/PVC. We finish with joint sealants, profiles, and skirting boards." Wall Claddings "We not only offer excellent flooring but also high-quality wall claddings for perfect room design. Wall claddings are a versatile design tool often used by architects, planners, and design specialists. Particularly, wood cladding enhances exclusivity, combining interior design with architectural style for an elegant focal point. This design option allows numerous possibilities for enhancing rooms and can be applied to almost any material with appropriate measures. In comprehensive room redesigns, the additional effort for wall cladding installation is relatively small, as everything necessary is on-site, requiring minimal additional processing steps. Targeted accentuation with wall claddings, especially with wall veneers, is recommended, as exclusivity can be increased at a minimal extra cost." Services "Our service includes comprehensive and expert consultation on flooring, wall claddings, as well as cleaning and maintenance. Our goal is to actively contribute to your individual room design. We offer the following services: • Sample presentation in-store or at your home. • Installation of sample areas for a practical preview. • Creation of color samples for parquet coloring. • Evaluation of substrates and derivation of measures for correct further processing. • Height adjustment using installation plates (chipboard/OSB boards, screed elements with or without insulation) or leveling compounds. • Moisture measurements on underlay floors to ensure optimal conditions. • Consultation on the proper use of care and cleaning products. We want to ensure that you not only find high-quality products with us but also receive all the necessary information and services for a successful room design."