COBLE ENTERPRISE CO., LTD. COBLE is one of the expert in manufacturing modular plugs, with excellent quality that we have granted the approval of UL, CSA, ISO9001 by BVQi , and complete with FCC PART 68 subpart F and BSI EN60603 - 7 standard to enjoy the high reputation in our professional domain.........................................................................................................................SHIH-CHUAN TECHNOLOGY (SHENZHEN) CO., LTD. SHIH-CHUAN is COBLE's factory in Mainland China. SHIH-CHUAN have more compition than COBLE Taiwan in China market if your suppuly chain are locate in China, SHIH-CHUAN will support quick service to you.