Bayan ingantaccen ingancin dubawa, PP tace farantin (core farantin) rungumi dabi'ar inganta polypropylene, wanda yana da karfi tauri da rigidity, inganta matsawa sealing yi da kuma lalata juriya na tace farantin, da diaphragm rungumi dabi'ar high quality TPE elastomer, wanda yana da high. ..
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