... / PA12. 3.Color:black,natural white,etc. 4.ISO9001:2 Cast nylon rod Color: Natural white, black, other color can be ... , mechanical lower shock, and abrasion resistance. Combined with these characteristics and good insulation, and chemical properties, ... water. 2. Poor acidproof ability, cant dye with acid or touch overmuch acid. 3. Poor lightfastness ... nylon rod Cast Nylon Rod with black white color