Hello, All products are industrial products. Bulk goods or sample goods can be delivered by air or sea freight. Feel free to contact us for more competitive freight quotations. Recently, copper and silver prices have fluctuated sharply. The prices on our website are for reference only. Please inquire separately for specific prices, which shall be subject to the official quotation.WhatsApp: +86 15305045587Email: elva@ddysupply.com / info@ddysupply.com