Flexible assembly system is an automated assembly system with outstanding assembly automation, assembly flexibility, high production efficiency and excellent reliability. It centers on robots. With its high production flexibility, it is suitable for assembling works where the product is changed frequently. For small and medium sized part assembly field, Guozi has developed standardization unit like modular transport unit, flexible feeding unit, mechanical arm assembly unit, Cartesian robot assembly unit, intelligent detection unit, as well as standard bust unit and standard electrical interface. The company has customized special equipment referring to squeeze riveter, screw machines and dispensing machines. Subdivided industries like cutting tool assembly and auto cigar assembly have typical cases where flexible assembly system is applied.