Haida Filter had been working with Frank Leinz for several years .The photography advice and ideas is very innovative and important for us . Frank is very famous and good reputation photographer . The feedback from all testing and marketing is quickly and responsible for us . We are so happy with our cooperation and will keep long cooperation with Frank Leinz . He is one of abosulately necessary person for us.

Olina Bi Sales Managerin Ningbo Haida Photo Supplies Co. Ltd.