G.652d optical fiber preform; 2. optical fiber, g.652d, g.657a1, g.657a2; 3. optical fiber cable for indoor and outdoor application; 4. fttx products, such as pigtail, patchcoard, enclosure, optical splitter, connector, cabinet, onu etc.; 5. telephone cable (2~2400pairs, jelly filled or unfilled, armored or unarmored); 6. lan calbe (cat3, cat5, cat5e, cat6, cat6a, cat7); 7. control cable; 8. low voltage power cable (below 1.0kv); 9. rf coaxial cable and leaky cable (1/2, 7/8, 1 5/8 etc.); 10. railway signal cable;.Clearing agent, transportation and shipping