Keystone Plastic LLC is founded in 2018. Our 4500m2 factory with 6 newly built production lines is located in Long-An Province, Vietnam. Our specialty is plastic extrusion with premium design and production quality for doors, door panels, cabinets and cabinet boards. We thrive on pushing PVC extrusion technology to the next level with innovation. The appearance and touch of our products are way beyond what our peers can do.