"Master Lock], which is known as a reliable company name and a unwavering company in a padlock and security products, has a reputation in the world.. Since the founding in 1921, we worked hard, focused on strengths and quality expectations, and continuously built new standards in the design, applications and performance of key and locks, to the trust of users. I got it. As the world's largest padlock international manufacturer and seller, we continue to expand the security solution product line without losing the enthusiasm of the founder of innovation, quality, and people..