Processus progressionis Kradium laser In 1996 Chengdu Sunda Electric Welding Machina Co., LtdAgens: machina electrici Panasonica glutino, Messel machina secans, materia Kobe chalybea, Hitachi hiatus angustus glutino In MMXII Chengdu Kelei intelligentes Equipment Co., LtdRobot welding system integration In MMXIX Jiangsu Kelei Laser Equipment Co., LtdLaser handheld welding ducens inceptum