What does it mean by non-refillable, double pilfer-proof or single-pilfer proof?
“Non-refillable” means people cannot refill the content of the bottle in an illegal way. All spout-out caps, all tear off caps and most screw-off caps are double pilfer-proof, it means, after the cap is opened, there are two(double) ways on the cap to prevent the bottle from being refilled. Some screw-off caps are single pilfer-proof, which means, after the cap is screwed off (opened), the bottom part of the cap is still fixed on the bottle neck, this part cannot be removed unless by legal manufacturers.
“Non-refillable” means people cannot refill the content of the bottle in an illegal way. All spout-out caps, all tear off caps and most screw-off caps are double pilfer-proof, it means, after the cap is opened, there are two (double) ways on the cap to prevent the bottle from being refilled. Some screw-off caps are single pilfer-proof, which means, after the cap is screwed off (opened), the bottom part of the cap is still fixed on the bottle neck, this part cannot be removed unless by legal suppliers.