... foreign countries such as Europe,America and South East Asia etc,they think highly of us ,thats contributes ... "16mm x 16mm18,19,20,21,3/4" x 3/4"19.1mm x 19.1mm16,17,18,19,20,211" x ... 1/2"25.4mm x 12.7mm16,17,18,19,20, ... " x 1/2"12.7mm x 12.7mm16,17,18,19,20,213/4" x 3/4"19mm x ... 211" x 1"25.4mm x 25.4mm15,16,17,18,19,20Technical Note: 1.Standard roll length: 30m;width ...