Armin Kienle

4square Return GmbH provides compliance consulting. It offers circular economy services for greener technology products. The company was founded by Armin Kienle and is headquartered in Holzgerlingen, Germany.

TechProtect GmbH is a full-service provider that offers products and marketing programs for sales promotion of new entries in the market. The private company is based in Holzgerlingen, Germany and was founded in 2002. TechProtect GmbH provides services along the product life cycle, including product guard, cashback, alt-against-neu, return logistics, worldwide logistics, recycling solutions, legal monitoring, and consulting. The German company's team has more than 21 years of experience working with the world's leading brands. TechProtect GmbH helps companies become more sustainable by closing the circle of the modern circular economy. The company offers complete handling of registration, reverse logistics, reprocessing, resale, recycling, and disposal. TechProtect GmbH also provides payout management and supervisory customer management center services. The CEO is Armin Kienle.