JIANGDU DONGYA have engaged in this foled over 8years and numerous of reputable companies from all over the world cooperate with us based on long-term contracts.Fasteners flanges & seals are our main products and we have a fastory for the manufacture of these products.The majority of our products are for the export market.and we enjoy a great international reputation.See our extensive product rang on our wenbsite at www.cnthy.com