Feb 23, 2022 · road stud for motorway company in singapore-nokin motorway the self-developed solar stud lights are green solar powered road studs company in singapore singapore 101 thompson road #15-03 united square singapore 307591 p 65 6572 9050 f 65 6259 4690 e sales.sg@csisolar.com. taiwan, china – taipei 36f-a3, no.68, sec. 5 zhongxiao