Continued the former article,this one is about the imformation of the third and fourth classifications which usually made from fiber optic manufacturer in china.
 
Three is called inflatable environment cable (Plenum).In indoor applications, when the cable need go through pipelines o,high pressure plenum or air handling systems to deliver information, you need to use level Plenum indoor cable. The specific use of the environment put forward more strict requirements of the cable on its flame resistance, corrosion resistance and other proposed .
 
The best fiber optic cable of indoor is mostly like this.So, the use of indoor cable make moremore stringent on sleeve material and the outer jacket material.Sleeve is tight set of PVC material, the outer sheath material should be certified to comply with UL flame retardant PVC material or hard fluoropolymer. PVC design is superior to using a fluoropolymer. Because PVC is soft and pliable, no inventory traces can ring-shaped storage.
 
People buy fiber optic patch cord in market should also know the fourth one which is called rodent-type cable.This kind of cable is mainly use of stainless steel hose protection single sleeve or multi-core fiber optical cable which has a strong anti-side pressure, resistance to bending, high tensile strength,excellent rodent performance. And it can be used to stampede situations occur, such as the laying of the limited space under the rug or requires frequent bending or have Rodents occasions.