QINGDAO GOFAI RUBBER & PLASTIC PRODUCTS CO.,LTD as a professional silicone duckbill valve manufacturer and supplier in China, all the silicone duckbill valve have passed the international industry certification standards, and you can be completely assured of quality. If you do not find your own Intent silicone duckbill valve in our product list, you can also contact us, we can provide customized services.