Hona joale letlapa la epoxy 'marakeng le ka aroloa ka halogen-free le halogen-free.Letlapa la halogen epoxy le eketsoa ka fluorine, chlorine, bromine, iodine, astatine le likarolo tse ling tsa halogen ho phetha karolo ea ho fokotsa lelakabe. element e thibela malakabe, ha e ka cha...
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