| we can supply 4cores ribbon protectorsHere are brief introduction of our company:Since 1999 CHENGDU KOSSIN is a leading manufacturer of CHINA Fiber Optic Fusion Splice Protector Sleeves.OPTICAL FIBER FUSION SPLICE PROTECTIVE SLEEVE Consist of cross linked polyolefin, hot fusion tubing and stainless.1.4CORES RIBBON SLEEVE(40MM):fusion sleeve(one ceramic pin): 0.08USD/PCS(factory price)2.4CORES RIBBON SLEEVE(40MM):fusion sleeve(one quartz pin): 0.16USD/PCS(factory price) | 
