Some 500-600 companies all across the island laid their cables during the first two decades of the industry's existence (when it was still illegal). In 1993 the Cable Television Law was passed. It carved up the province into 51 districts, each of which are to be serviced by a maximum of five systems.
第四台非法存在二十年，全省系統一度高達五、六百家，八十二年「有線電視法」三讀通過，將全省規劃為五十一區、一區最多可以有五家業者經營。