In the past, export cargos from OPTC were fastened with wooden planks, which must be smoked to prevent pests for quarantine purposes. The bottom portion of the planks are prone to damages during unloading, and to dispose them, customers would require professional help. To minimize packaging materials, OPTC partly switched to galvanized rectangular pipes fastened with tetoron ropes in 2019. Customers can recycle and reuse the pipes. This packaging method is so successful that our customers inquired about it and replicated it at their end.