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C.L. Contract Logistik AG 

Basel · Since 2003

The core activity of C.L. Contract Logistik AG is neutral general contracting in logistics, particularly in procurement and distribution logistics. The company offers 4PL services (Fourth-Party Logistics) and consulting, where the selection of providers is based on the 'best in class' criterion to ensure constant and sustainable quality and the best possible solutions. Specific activities include: customs clearance in its own right, transport control, procurement of goods (raw and finished materials), storage and distribution, tracking and monitoring of shipments, and consulting in logistical matters. The company positions itself as an independent and neutral partner, focused on the needs of its customers, and forms a constructive interface between various partners and service providers.

clean-tek Holding AG 

Basel · Since 2018

clean-tek Holding AG supplies and implements customized cleanroom systems, providing consulting, detailed planning, in‑house manufacture of key components, installation and ongoing maintenance and service.

clean-tek Reinraum und Hospitaltechnik AG 

Basel · Since 2009

clean-tek Reinraum und Hospitaltechnik AG is a full-service provider for cleanroom technology. The company provides consultancy, detailed 3D planning, in-house manufacturing of key components, installation, commissioning and training, as well as maintenance and servicing for projects in sectors such as pharmaceuticals, medical technology, healthcare and research.

Clearance Ventures AG 

Basel · Since 2007

Clearance Ventures AG is a family office investing globally in startup companies at all stages from seed to IPO, providing capital and hands‑on support. The firm pursues industry‑agnostic VC investments, builds ventures alongside founders and holds interests in real estate companies.

Cleeven He IT AG 

Basel · Since 2024

Cleeven He IT AG is an engineering and consulting company that provides technical expertise in R&D, design office services and operational excellence. The company supplies consultants and supports projects across sectors including energy, aerospace & defence, transport, pharmaceutical & chemical, and IT & telecommunications, covering system and software design, development, testing and project management.

CLEEVEN He AG 

Basel · Since 2015

CLEEVEN He AG is an engineering and technology consultancy offering technical consulting, R&D/design-office services and operational-excellence support. It serves sectors including energy, IT & telecom, aerospace & security, transport, and pharmaceutical & chemical, providing project support as well as systems and software engineering.

Clever.Care AG 

Basel · Since 2017

The company Clever.Care develops and offers a digital platform aimed at improving communication and coordination between care services, clients, their relatives, and other healthcare providers. The platform enables efficient information exchange, automates workflows, and simplifies care coordination to improve the quality of care and the quality of life for older people.

Client Focus GmbH 

Basel · Since 2003

The core activity of ClientFocus GmbH is the provision of financial and accounting services, particularly in the area of outsourcing commercial services, such as accounting, human resources and financial management, for small and medium-sized enterprises (SMEs).

Cloak GmbH 

Basel · Since 2006

The core activity of Cloak GmbH is the manufacture and sale of custom-made carpets for commercial, public and private interior spaces. The company offers carpets in various sizes, colors and designs, and places emphasis on the use of environmentally friendly materials such as undyed wool and plant-based dyes.

Club Chapiteau 

Basel · Since 2011

The core activity of Club Chapiteau is the organization and execution of exclusive events and gatherings in the Swiss cultural scene, particularly in connection with the "DAS ZELT" format. The goal is to enable members and guests to engage in informal exchanges of ideas with interesting personalities and artists while simultaneously supporting the Swiss cultural scene.