Martin Stier is an accomplished professional in the solar energy sector, currently serving as Sales Manager at LONGi Solar since April 2022. Previously, Martin held multiple roles at Q CELLS from October 2013 to March 2022, including Head of Customer Complaints & Technical Service Management, Manager of Global Customer Complaints Management, Senior Engineer in Global QM Supplier Management, and Engineer in Quality Management focused on Supplier Complaints. Martin holds a Master of Science in Sustainable Energy Systems from Otto-von-Guericke University Magdeburg and a Bachelor of Engineering in Solar Technology from Hochschule Anhalt.
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