PTR Holland delivers high quality products. Therefore all of our product are tested by different companies. These tests include our pilot- and embarkation ladders, lifeboat ladders, container floors and other products. Al......PTR Holland delivers high quality products. Therefore all of our product are tested by different companies. These tests include our pilot- and embarkation ladders, lifeboat ladders, container floors and other products. Also we have received certificates for different kind of materials we use such as ropes, aluminium clamping sockets and our wooden, polymer and aluminium steps. Our products are being tested constantly to offer you the highest possible quality products.