Tie-Knots International offers Range of Silk Shirts. Tie-Knots International manufactures and exports a wide range of stylish Neckties, shirts and silk scarves. The Range of Silk Shirts is made in a wide range for domestic and foreign markets. This range of shirts comes as Plain Silk Shirts and Printed Silk Shirts. This beautiful line of silk shirts can be used to provide personnel with a beautiful uniform look or as a promotional tool at tradeshows.