Shandong OUJIN Injiniyan Injiniya Co., ltd. galibi yana cikin samarwa da gudanar da aikin injin na matsakaita da ƙananan loctic ect, wanda yafi samarda samfurin MAMMUT na kayan aikin lalata kayan injin kamar ɗimbin kuɗaɗen 1-6TON, grader, 2-3.5 TON terk forklift, telescopic Mai ɗaukar kaya, MAMMUT grasping machine, injin grabbing na katako da injin dusar ƙanƙan dusar kankara.MAMMUT ya rufe filin da ke da fadin murabba'in murabba'in 50000 a halin yanzu. An kafa shi a mataki na uku na aikin injiniya a Masana'antar Masana'antu ta Caterpiller bisa ga tsarin dabarun ƙungiya.