The professional ring name of the twins "Chana-Songkram" ("winning the war") comes from their supporter Prachuap Pao-in, at that time, was an investigative inspector at the Chana Songkram Metropolitan Police Station (located in the Bang Lamphu neighbourhood near Khaosan Road).
He started boxing from Muay Thai in the name "Lomnua Sakchainarong" (ลมเหนือ ศักดิ์ชัยณรงค์) by fighting regularly at Rajadamnern Stadium and also won mini flyweight champion in 1988.
He defended the title against 8 fighters before losing it to Rosendo Álvarez in the late 1995 by split decision at Sa Kaeo Province, Thailand.
In 2004, he challenged for the WBA interim minimumweight title twice again with Juan Jose Landaeta, but was not successful (including one draw).
[1] Chana is currently the owner of a Muay Thai gym named Chaosingkhon (จ้าวสิงห์ขร) at Pho Thale District, Phichit Province, after many careers.