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Zest4 is an experienced multi-network IoT & M2M managed connectivity service provider in the UK with years of experience in the IoT, Mobile Voice and Data markets. We have vast experience across a diverse set of applications covering the full spectrum of IoT use cases.We offer access to a complete range of tariffs from many global mobile network providers, as well as numerous roaming solutions and international capabilities.

Zühlke was founded in 1968. The company is now owned by its partners and employees, more than 1,600 people, who work in local teams in Austria, Bulgaria, Germany, Hongkong, Portugal, Serbia, Switzerland, Singapore, the United Kingdom and Vietnam. We draw our experience from over 10,000 completed projects and from the know-how of experts with diverse professional backgrounds. This makes us a great solution partner to our customers, achievingglobal revenues of CHF 218 million in the 2021 financial year.