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Non metal hoses for use in industrial applications; non metal hoses for use in the chemical industry; non metal hoses for use in the food industry; plastic hoses, in particular flexible plastic hoses for use in industrial applications; plastic hoses, in particular flexible plastic hoses for use in the chemical industry; plastic hoses in particular flexible plastic hoses for use in the food industry; plastic wound hoses, plastic spiral hoses, plastic spiral hoses with support coils for use in industrial applications; plastic wound hoses, plastic spiral hoses, plastic spiral hoses with support coils for use in the chemical industry; plastic wound hoses, plastic spiral hoses, plastic spiral hoses with support coils for use in the food industry; plastic extraction hoses, plastic feet hoses and non-metal connection pieces for hoses for use in industrial applications; plastic extraction hoses, plastic feet hoses and non-metal connection pieces for hoses for use in the chemical industry; plastic extraction hoses, plastic feet hoses and non-metal connection pieces for hoses for use in the food industry