Sumitomo Heavy Industries, Ltd. (SHI) is an integrated manufacturer of industrial machinery, automatic weaponry, ships, bridges and steel structure, equipment for environmental protection, including recycling, power transmission equipment, plastic molding machines, laser processing systems, particle accelerators, material handling systems, cancer diagnostic and treatment equipment and others.

Mitsubishi Heavy Industries, Ltd. is a Japanese multinational engineering, electrical equipment and electronics company headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group and its automobile department is the predecessor of Mitsubishi Motors.

Kobe Steel, Ltd., operating worldwide under the brand Kobelco, is a major Japanese steel manufacturer headquartered in Ch??-ku, Kobe. Kobe Steel also has a stake in Osaka Titanium Technologies. The company supplies about half of the global market of the wires used in valve springs of auto engines.

Hitachi Construction Machinery Co., Ltd. is a Japanese construction equipment company which is into the manufacturing, sales and service of construction machinery, transportation machinery, and other machines and devices.

Caterpillar Inc. (often shortened to CAT) is an American Fortune 100 corporation which designs, develops, engineers, manufactures, markets, and sells machinery, engines, financial products, and insurance to customers via a worldwide dealer network. It is the world's largest construction equipment manufacturer.

Komatsu is the world's second largest manufacturer of construction equipment and mining equipment after Caterpillar. However, in some areas (Japan, China), Komatsu has a larger share than Caterpillar. It has manufacturing operations in Japan, Asia, Americas and Europe.

Alat Berat yang Jenis (Type) Excavator adalah yang sangat banyak dipergunakan disetiap bidang Bisnis atau Proyek seperti Konstruksi, Pertambangan, Kehutanan, Pertanian, Perkebunan, Kelautan dan laiinya. ExcMenuavator (Ekskavator) merupakan Alat Berat yang dapat dipergunakan untuk banyak Pekerjaan seperti Mengeruk, Memindahkan, Mengangkat, Menumbuk, Menarik dan lainnya.