Kyocera plans to build twin plants in Tijuana.

Kyocera International Inc., the San Diego-based American subsidiary of the Japanese high-technology conglomerate Kyocera Corp., has signed an agreement to purchase 26 acres of vacant land near Tijuana’s airport for future development of the plants. Terms of the sale were not disclosed. KII, a manufacturer of ceramic semiconductor packages, employs 2,300 workers in the United States, including 1,600 in San Diego. The parent company, which makes consumer electronics products including Yashica cameras, also may build assembly plants on the Mexican site.