Our executive offices and our manufacturing and assembly facility is located in Harbor City, California, where we lease a 21,000 square foot manufacturing and assembly facility.
We final assemble our vehicles, drive systems, inverters, chargers and energy storage systems at our manufacturing facility in Harbor City. We utilize manufacturing facilities of our strategic partners in Belgium, Netherlands, India and China to assemble finished vehicles for regional markets. We also utilize our manufacturing facility to conduct lithium battery testing for our customers. Our entire current inventory is warehoused at our facility in Harbor City.
Our manufacturing process consists of assembly, software installation, functional testing and quality control. Testing and quality control processes are also applied to components, parts, sub-assemblies, and systems such as battery systems, drive systems and chargers. We also perform charging and discharging testing on all battery systems and individual batteries prior to shipment of our vehicles, drive systems and energy storage products.
Our engineering and procurement offices are also located at this facility to support our production needs. Our engineering and product development efforts are focused on product improvements, innovations, and cost reductions. Prototyping, testing and pre-production of our new vehicles, assemblies and components is conducted at our assembly facility. In addition, we also utilize outside services to conduct certification testing on our vehicles.