And do not need to change the process and technology, including processing rolled parts, surface wear parts and vulnerable to corrosion of parts. Because 304 composite stainless steel is a was satisfaction of high quality and low price combination products , it can widely for many type of products , for example : food industrial , and wine industrial , and chemical and medicine device , and medical instruments , and transport device , and ship part , and agricultural , and car inside and outside loaded , and kitchen device , and appliances , and welding pipe , and building inside and outside decoration , and indoor pipeline , and boiler , and desktop and veneer , and bathtub , and container device , and pool , and solar water heater , and swimming pool walls and so on .