We are the manufacturer and international supplier of container seals here at karachi pakistan. Our seal is reliable and we are using best raw material for it's making, this seal is based on iron and we cover it with crystal transparent plastic moldings for good appearance. If you are an exporter and using shipping containers for exporting your goods than you must have to use container seals with printed your (logo) company name on it and different serial nos. To recognize. You can note down your seal code after loading of your shipment and check that number on port of loading / destination. We are offering free delivery to any city of the world 50 pcs packet seperately