Shenzhen TianCheng QianHai Tech Development Co.,Ltd is a professional manufacture in development, production, sales of PTC heating element and application products. Our company was founded in 1993 ,and the import and export trading company was established in 1997 ,specialized foreign sales. We have a professional technical team and rich production experience. Our company passed the ISO 9001 quality system certification in 2000, Many of the products have UL, CSA, TUV, CQC safety certification. A number of products of our independent research and development obtained the national patent. The excellent product quality, stable performance, best-selling domestic and abroad. We pay special attention to customer service,To provide reasonable suggestions and professional instruction for customers.div>