Our company have won a practical new pattern certificate of granular electrical conductors and non-electrical conductors separation device, patent No.: ZL200720089238.1; a practical new pattern certificate of printed circuit board recycling wind pressure separator, patent No.: 200720089239.6; a kind of printed circuit board pulverizer, patent No.: 200720093087.7; a kind of printed circuit board disassembling device, patent No.: 200720093090.9; a kind of triple dust catcher, patent No.: 200720093091.3; a kind of two-stage and two-compartment wood flour machine, patent No.: 200720093093.2; a kind of three-stage wood flour machine, patent No.: 200720093089.6; a kind of multi-stage herbs pulverizer, patent No.: 200720093088.1.