the following are the top manufacturing companies in Japan :

1. furukawa electric co. ltd operates in Infrastructure, Electronics and Automotive Systems, Functional Products, and Service and Developments .
2. Toyota Motor Corporation is a Japanese multinational automotive manufacturer
3. Lexus is the luxury cars division of the Japanese automaker Toyota.
4. Honda Motor Co. Ltd is a Japanese manufacturer of automobiles, motorcycles, and power equipment.
5. Acura is the luxury cars division of Japanese automaker Honda
6. Mazda Motor Corporation is a Japanese multinational automaker 
7. Subaru is the automobile manufacturing division of Japanese transportation conglomerate Subaru Corporation (formerly known as Fuji Heavy Industries)
8. Datsun is an automobile brand owned by Nissan.
9. Mitsubishi Motors Corporation is a Japanese multinational automotive
10. swcc showa cable have been providing the world with electric wires and cables and other such products since establishment in 1936.
11. Fujitec elevator company is a global leader in research and development, manufacturing, sales, installation and maintenance of elevators, escalators and travellators.
12. Infiniti Cars is the luxury vehicle division of Japanese automaker Nissan
13. Mitsuoka Motor Co. Ltd is a Japanese automobile company (Luxury cars ).
14. Bridgestone Corporation is a Japanese multinational Tyre manufacture
15. Yokohama tires is a Japaneses Tyre manufacturer company
16. Toyo Tire Corporation  is a Japaneses  Tyre manufacturer .
17. yamaha motor company is a Japanese motorcycles manufacturer .
18. Daikin Industries Ltd is a Japanese multinational air conditioning manufacture
19. Nohmi Bosai Limited is pioneer in the fire protection industry in Japan with 100 years experience, Dedicated to R&D, Manufacturing, Designing, Consultation, Installation, and Maintenance