SP 337, single crop type, is also imported from Thailand, and then distributed by GFD in Myanmar. Germination percentage is over 80 % and seed purity is also good. Plants are vigorous growth and have a deep, strong root system. Therefore, SP 337 can moderately resistant to lodging. It produces big ear size and uniform ear with well husk cover. Shelling percentage is also good. Kernel color is bright orange color. The corn cobs can be harvested (110 – 120) days after sowing. Yield can be achieved nearly 2000 viss per acre. SP 337 hybrids can be sown on the mountain and plain regions in every season.