HomeCompany InformationQuality Assurance

Quality Assurance

Quality Policy

1.Give utmost priority to customer satisfaction.

Assure that we provide customers with products that meet the quality required by each customer.
With customer satisfaction and trust, we should maintain and expand the market to create permanent profits.

2.All people should take responsibility for the quality.

All employees fulfill their own role with confidence and pride in mind.

3.Concentrate on factual quality controls.

Concentrate on scientific controls based on five principles (field, actual product, reality, rules and principles) to prevent potential nonconformities.

Quality Assurance

We promise to provide the highest level of reliability and safety by complying with internationally recognized quality assurance standards.

ISO9001 Certification

ISO9001:2000 Certification


ISO9001 certificate is crucial for supplying products to countries all over the world.

We, at Daido Kogyo Co., Ltd. are qualified for every process from design, development, production, and installation to technical assistance services for all of the products we manufacture including conveyor systems, welfare equipment, rims and wheels as well as various kinds of chains.

We strive to increase customer satisfaction by continuously improving our quality management system.

API Standards Certification

API Standards Certification

The petroleum industry field is the core of today's industries. The United States industry, which leads the global market, requires very strict quality management for all machinery components related to oil field development and petroleum refineries. API (American Petroleum Institute) is an institute responsible for setting standards and qualifying in accordance with these standards.

We, at Daido Kogyo Co., Ltd. obtained this certificate for industrial machinery chains in 1972. Since then, in compliance with API's strict quality management system we have delivered our D.I.D products to domestic and foreign customers, as well as the U.S. market.