Advanced Manufacturing Startups

Granite Partners is a long-term owner of established, profitable businesses primarily in the upper Midwest, specializing in niche market leaders across manufacturing, industrial products, software, and medical devices. The firm acquires companies with strong cultural foundations and values-aligned leadership, offering flexible partnership structures including equity, cash, and ownership exchanges to facilitate founder transitions.

1 investor

GLC Inc. develops custom graphene applications and solutions for global markets. The company licenses graphene technology to partners across various industries to enhance product performance and enable environmental and economic advancement.

1 investor

Graphenest develops graphene-based electromagnetic shielding solutions for electric vehicle suppliers and next-generation electronics manufacturers. The company produces graphene coatings and enhanced composite materials that reduce weight, manufacturing time, and environmental impact while meeting EU sustainability and zero-emissions regulations.

1 investor

Grapherry produces scalable graphene and graphene oxide derived from waste carbon for industrial use across energy, construction, composites, and agriculture. It supplies customizable graphene materials that integrate into customer manufacturing and product development processes.

1 investor

Graphic Controls (now part of Nissha Medical Technologies) manufactures precision printed and consumable products for industrial monitoring and medical applications, including data recording systems for drilling and exploration. The company serves healthcare, industrial monitoring, and transactional media markets with core manufacturing capabilities in printing, coating, laminating, and molding.

1 investor

Gravis is a bulk transportation packaging supplier that designs and manufactures flexible intermediate bulk containers (FIBCs), bulk bags, and related packaging solutions for industries including food, construction, and chemicals. The company serves customers across North America and operates manufacturing facilities across multiple continents, with a focus on customized solutions and sustainability.

1 investor

Greazly provides real-time monitoring of grease points on industrial machinery, sending alerts and building an operating record so maintenance teams can detect greasing issues before they cause machine failure or downtime. It targets industrial environments with continuous or precision operations where greasing reliability affects production continuity and asset life.

1 investor

The Green Dairy manufactures plant-based dairy products for private label, retail, and foodservice partners across multiple applications including beverages, yogurt alternatives, and desserts. The company serves brands, retailers, and food service operators primarily in Europe and Southeast Asia.

1 investor

Green Dot Bioplastics is a bioscience company that develops and produces biobased, compostable, and recyclable plastics, including its Terratek line of bioplastics. It offers product development and materials expertise to companies making sustainable products.

1 investor

Green Elephant Biotech manufactures 96-well microplates and related lab consumables for life science research. The company sells through authorized distributors across Europe and the United States, as well as directly to labs.

1 investor

Green Empowerment Zone facilitates clean energy project development by coordinating partnerships between companies and local, state, and federal agencies. The organization helps connect businesses to resources and streamline the permitting and investment processes across multiple government entities.

1 investor

The Green Energy Exchange is a licensed retail electric provider that sells renewable energy plans directly to homes and businesses, cutting out intermediaries to lower prices for consumers and raise revenue for generators. It currently operates in Texas.

1 investor

GreenFortune manufactures window and door systems in India using PVC profiles and supplies them to fabricators who serve end customers. The company operates as a B2B2C business with a tech-driven approach, offering customizable products manufactured to international standards while tailored for Indian climate conditions.

1 investor

Green Optics is a South Korean manufacturer of optical components, producing most of its core optical parts in-house. It operates multiple manufacturing factories and a space optics lab in Korea plus a factory in Vietnam.

1 investor

Green Diamond produces performance materials—blasting abrasives, foundry sand, and roofing granules—made from magnesium orthosilicate that contain no free silica. The company mines its material from a reserve in Riddle, Oregon and supplies industries such as surface preparation, shipbuilding, automotive, roofing, foundry casting, and powder coating.

1 investor

The Green Factory manufactures sustainable wood products including custom interior fit-outs, furniture, homeware, and gifts using eco-friendly timber sourcing and circular production practices. The Malaysian company also operates a concept factory and physical store while offering educational programs on sustainable manufacturing and consumption.

1 investor

GMDC operates the Brownsville Industrial Center, offering flexible, affordable units ranging from 1,200 to 6,000 square feet for small manufacturing businesses. The facility, located in Brooklyn, includes amenities such as a shared spray booth, high ceilings, heavy floor loads, loading docks, and three-phase power.

1 investor

GreenTidio develops a proprietary, low-carbon manufacturing process for titanium dioxide that reduces production costs and environmental impact compared to conventional methods. The company, spun out from Hebrew University of Jerusalem, targets industrial manufacturers seeking cleaner and more efficient chemical production.

1 investor

Grenova develops laboratory technology for washing and reusing pipette tips and microwell plates, aimed at labs seeking to reduce consumable waste and costs. The company operates in the life sciences lab equipment and sustainability space.

1 investor

Greycon develops planning, scheduling, and trim optimisation software, including its opt-Studio MES/APS system and X-Trim tool, for manufacturers in the paper, board, film, and related roll-based industries. Its products apply mathematical and machine learning techniques to reduce waste and optimise production, and it serves customers across 45 countries.

1 investor

Greypoint Industries manufactures affordable autonomous interceptor systems designed to counter drone swarm attacks, offering military forces a cost-effective defensive solution that can be deployed and operated by soldiers.

1 investor

GreyscaleAI provides AI-powered X-ray inspection validation and system optimization services for manufacturing quality control. The company works with production teams to evaluate whether X-ray inspection can reliably detect specific defects, contaminants, or missing components within each application's unique product, packaging, and line conditions.

1 investor

GRIS Group manufactures products using stamping and machining processes, producing the tooling and dies required for fabrication in-house through its tooling preparation, machining, and design departments. It operates in industrial manufacturing, managing tool production, raw material procurement, and tooling design supported by a Sage X3 database.

1 investor

Gritec manufactures prefabricated concrete structures such as walk-in modules, compact stations, facades and roofs, along with aluminium components including transformer and control room doors, ventilation elements and pressure relief systems. It supplies customer-specific technical buildings and infrastructure such as switchgear houses, transformer stations, compact substations and signalling and traffic control technology.

1 investor