• Established in 1990, Thien Duc Thanh Co. Ltd have 30 years of experience in manufacturing PVC plastic granules and door/window gaskets.
  • Our core operating principle "ALL FOR CUSTOMER SATISFACTION" is the key to our success over the years.
  • We always strive to provide top quality products which exceed customer expectations by applying International Quality Management System ISO 9001 along with continuous improvement in all daily processes including manufacture, delivery, customer service etc.
  • As of year 2020, Thien Duc Thanh Co. Ltd is the Market Leader in door/window gasket for construction industry in Vietnam.
  • RONIX product brand is well-known to majority of customers and contractors in construction industry.