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titanium steel, also known as titanium alloy/316l stainless steel, is more expensive than ordinary stainless steel. pass the artificial sweat test,through the artificial sweat test, it is an environmentally friendly material that will not cause side effects and harm to the human body it is very suitable for making jewelry that comes into contact with human skin. titanium steel jewelry is made of the same material from the inside to the outside its characteristics: high hardness, corrosion resistance, strong acid resistance, strong alkali resistance, no discoloration, no fading, no allergies..syi