To further improve the traceability and identification of our products, since September 1, 2017, we will print a set of 10 bits code on all our products (see figure below). All Customers can contact us through the information below to identify the authenticity of our filters.

Contact information:

Skype：Lisawong2016@hotmail.com

Wechat：15866740516

Tel.：0531-58622888，ext814