Founded in 1999 with a well-oriented marketing strategy, a well-trained workforce and incorporating sophisticated technology, Zhejiang Longyu Science and Technology Co. Ltd. is now a large-scale corporation widely recognised as a market leader in the fields of research, development, production and the distribution of Steel-security door and Interior door. Longyu has a 38 thousand square meters production room equipped with 40 advanced processing machines and 365 employees (at least 65 of whom are graduated level or have specialist training). Our products have been approved by the ISO9001-2000 International Quality Control System since 2002. Our company has been striking to improve the quality of our products, renew our equipments and expand our knowledge gradually. Our products have successfully entered into the Russia, Ukraine and Poland markets ect., and have gained a significant market share and favourable reputation throughout the world as a result. The pursuit of quality is our life, and the honour is our future! Longyu welcomes your suggestions and cooperation!