Patent

Handok International holds U.S. and Korean patents on Natural Zeolite Block and its manufacturing methods.

Patent on Natural Zeolite Block
(Korea, Patent No.10-2404200)

CERTIFICATE OF DESIGN RESIGTRATION
(Korea, Resigtration No.30-1197020)

NATURAL ZEOLITE BLOCK FOR IMPROVING WATER QUALITY AND METHOD FOR MANUFACTURING SAME
(US11,524,273BL)

CERTIFICATE OF DESIGN RESIGTRATION
(Korea, Resigtration No.30-1228444)