CTI provides PFOS testing services related to rail transit ships and aviation, according to the International Maritime Organization 2009 Hong Kong International Convention on Safe and Environmentally Sound Recycling of Ships and the Marine Environmental Protection Committee meeting resolution (MEPC.269(68) )) 2015 Hazardous Substances Inventory Compilation Guidelines and EU Regulation No. 1257/2013 and customer requirements to detect the content of PFOS in samples.