In 2008, some enthusiastic BUET graduates started their engineering venture in the name of Filament and with the brand name ‘MUSPANA’. The main purpose behind creating this organization was to manufacture technological devices which are imported from abroad but can easily be made in Bangladesh. From 2008, Filament Engineering Ltd. started working as a local distributor of various electrical & electronic products, biomedical equipments and other engineering products. From 2009, Filament also Started manufacturing and assembling various solar system equipment, like  Solar Charge controller, Solar Street Light Controller, Inverter,  Battery Charger, Clean Cook Stove, LED Light etc. Soon it gained the attention of the tech-fans due to its unique aspect and technology commitment to innovation in the field of renewable energy systems. Filament takes the challenge to become the pathfinder of a new horizon in technology.