... your request) 6.ABOUT US:Shenzhen Light World Technology Co., Ltd, is a leading Metal Gifts and Premium manufacturer ... . Our product lines include Titanium cufflinks, Stainless Steel cufflinks, Copper (brass) cufflinks, and alloys cufflinks, Pins, Keychains, and ... Artwork & Film processing, etc. Materials we use including Aluminium, Copper, Brass, Iron, Stainless Steel, Tin, Zinc Alloy, Pewter, etc ...