Zhongshan Hollan Living Innovation & Integration Co. Ltd Source our easy-to-install locks with replaceable cylinders.Zhongshan Hollan Living Innovation & Integration Co. Ltd is a professional enterprise integrating product design, development, production and sale under one roof, specializing in professional locks and hardware products. We have been in this field for 10 years now. We have 300 to 500 high-quality staff, 20 multifunctional production lines, 12 die casting machines, 100 different mold manufacturing machines, stamping machines and other facilities, ensuring we can complete your requirements excellently. We also provide OEM/ODM services to 80% of door companies in mainland China.About 10 QC personnel control the products in every product process and follow ISO 9001:2008 guidelines to ensure the highest quality all the time. Our brand Hollan was established on May 18, 2009, the company as a sole proprietorship, corporate taxpayers in General. In August 2005 with the establishment of "Yagu doors and windows hardware technology limited" belong to Hollan Group.