Higoal is the biggest Fiberglass L profile manufacturer in South China, being production for over 15years ... pultruded profile are available in standard configurations including. Fiberglass L profile, I-beam, wide-flange beams, channels, bars, round and square tubes ... for a specific rod or tube size.Channel/BeamAngles, I-beam, wide-flangebeams, channels, bars, round, and square Tubes, Custom shapes ...