In addition the alloy of foreign copper-nickel alloy acts for importation from Germany, stove foreign copper-nickel alloy that surface can't change color products to can offer, up to 4 minute 260 C or 1 minute 280 tight severe test of C continuously even more to need, go back, weld especially, it is that the products test actually that compare, no matter dip in tin or can meet customer's requirement to extend different fields such as the intensity,etc. even more with the day at present on the market, after many one press Shieding Cass manufacturer's introducing amount and produce, especially more competitive in price, it is absolutely the customer's best choice.