* "SL" type is for fresh water use. "CSL" and "CX" types are for
sea water use.
* All area touches water (liquid) are made in resign and stainless
steel. So it creates higher durability and protect from getting
rust. (CX-250L and CSL-100L are for shallow under water
use).
* The "CX" are all made of rust-free stainless steel (SUS316)
except of packing and handle.
