Congratulations to Shenzhen Whaley electronic technology limited company successfully developed a series of COB type oxygen sensor, 2PIN:660/905, 3PIN:660/940, 4PIN:660/905/940 package insert and supporting PD. This product adopts advanced production technology, compared with the conventional epoxy technology, beautiful appearance, smooth surface, uniform light sensitive, so as to ensure the stability of welding parameters, but also easy to. Cheap and fine, can replace South Korea, the United States and other major brands. At present, this series of products have been in mass production. Welcome to contact us.