Changzhou Yunk-tech Co.,Ltd. is established in 1995 Year, had supplying of electronic materials and insulating materials, such as copper clad laminate and unclad laminates We also sell different grade CCL from big factories in China, such as NY, KB and SY just like the FR4,FR1,XPC,CEM1,CEM3 and relatived offcuts. We have more than 20 years to offer high reliability and quality products, and we laso buy electronic material in large quantity from some leading PCB enterprises. In 2010, we had set up our own factory for take the copper out from the ccl offcuts which is too small for customer using. we have have a good corporation with domestic and abroad cutomers and serve with competitive prices.