The OS  Collections comprise of polyurethane architecturalmouldings and decorative ornaments. Our products are manufactured to meet very high quality assurancestandards. There are enviromentally friendly and can be used forboth interior and exterior purposes. The OS Qingchang Collectionsare perfect for your interior decoration projects as well as DIYpurposes. The OS Collections are internationally accepted and we manufactured& exported our polyurethane decorative products to North America, The Middle Easts, Russia, Eastern Europe, Singapore,Japan, and Korea.Â