THIM company specializes in epoxy fiberglass pultruded products. such as panels, rods ,tubes. and in 2004 THIM acquiring shanghai changli composite insulator Co. ,ltd. With rich strength, good R& D, perfect inspection equipment and apparatus now THIM company becomes one of the largest insulators core rod and insulators manufactures in China . These products have been inspected through national power department related and quality is conformed with IEC 、 ASTM 、 ANSI 、 GB 、 DL etc.