Mr. Alongkorn Wiroon, age 39 has he is an existing customer with a good payment record. He was established Khanu Engineering Limited Partnership on 2006. The company has been operating provides full service construction sands . The business activities are related sand shifting and selling to their customer. The company was granted a concession for dredging sand shoals in Chao Phraya river at Phayuha Khiri District Nakhon Sawan Provice. The concessions will be renewed in every six months.