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"PORTEC." Fullformexpand.com, https://www.fullformexpand.com/portec/709234. Accessed 28 Dec. 2025.
Fullformexpand.com, 2025. "PORTEC." Accessed December 28, 2025. https://www.fullformexpand.com/portec/709234.
"PORTEC." (n.d.). Fullformexpand.com. Retrieved December 28, 2025, from https://www.fullformexpand.com/portec/709234.
PORTEC. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/portec/709234 (Accessed: 28 December 2025).