The Fine Arts Department designed the port bridge with ripples, waves, mountains and trees in the seal and described the meanings as follows:
The port bridge consists of a lamp pole which means that Trang has been the port for contacting and trading with foreign countries since the ancient era.
The sea with waves and ripples comes from the word 'Trang'which means 'waves'
The mountains describe the characteristics of areas in Trangwhich are low and high hills in alternation with mountains.
Trees mean rubber treeswhich Phraya Ratsadanupradit Mahison Phakdi (Khor Zim Bi Na Ranong) planted in Trang for the first place.