Sietze Hepkema

Circle Economy is a Dutch company that focuses on creating a zero-waste industry, particularly in the area of textiles. The private company is based in Amsterdam, Netherlands, and was founded by Robert-Jan A. M. van Ogtrop and Sietze Hepkema. The company aims to prevent and reduce the waste mountain of textiles by redesigning the way of working before reaching a point of no return. The company draws inspiration from nature, which is a perfect circle. Circle Economy has empowered 120 businesses, 51 cities, and 23 nations in the past 10 years. The company has trained over 2700 people and 350 organizations and developed five digital products.

Wavin Holding BV provides plastic pipes systems and solutions, which enable safe distribution of drinking water, sustainable management of rainwater and waste water, and energy-efficient heating and cooling for buildings. The company was founded in 1955 and is headquartered in Zwolle, the Netherlands.

Nieuwe Kerk Amsterdam is a cultural institution that is based in Amsterdam, Netherlands. The Dutch company is known for its high-profile exhibitions of art, photography, and inspiring people and cultures. The private company offers various educational programs, including independent school visits and educational tours, to explore the century of Juliana with students. The company's website includes general terms and conditions, a disclaimer, and a privacy statement. The company's founder is the New Church Bank Giro Lottery.

Wavin BV manufactures and supplies plastic pipe systems and solutions. The firm provides integrated above and below ground solutions for water supply, sewerage, drainage, infiltration, surface heating and cooling, soil and waste and telecom sectors. It also offers designing services, product support as well as implementation and after-sales services. The company was founded in 1955 and is headquartered in Zwolle, the Netherlands.

Koninklijke Volker Wessels Stevin NV provides construction and civil engineering services. It operates business through the following markets: building and property development, energy and telecom, and infrastructure. It offers housing and utility construction, industrial construction, property development, civil engineering, network infrastructure, telecommunications infrastructure, railway construction and maintenance, technical installations, traffic technology, plant and machinery management, park management, building supplies and consulting services. The company was founded in 1854 and is headquartered in Amersfoort, Netherlands.

VeerStichting is a non-profit organization, which engages in the development of the exchange of ideas between students and those who shape society. The company was founded in 1978 and is headquartered in Leiden, Netherlands.