3North Co.,Ltd.is the special company that applies itself to design, develop and manufacture the computer network products and sells the acting products. Shanghai is the center of our company.We have one factory,two branchs and widely established sales in our country.Our operation have extended all over the world including the Southeast Asia,Taiwan,Japan and Europe etc. 　　Our company produce the computer Network Cable Tester mainly.The network cable tester is an absolutely necessary tool for installation and inspection during the distributing the network lines.We have ten varieties nearly,they can adapt for different requirments.Its market share in China and the products have been exported.We have grown in a market of intense competition, we have expanded our workshop and product line in 2002,and the month output amounted in the aggregate to 50K.At the same time,We carry on the OEM order, and have the widely marketing. 　　Today, dpending on the excellent researchers,the professionals on the product line and comprehensive after-sales services,we are advancing towards the all-new 21st century.