THE HZS/HLS SERIES OF CONCRETE MIXING PLANTS HAVE PASSED THE SCI-TECH ACHIEVEMENT APPRAISAL CARRIED OUT BY NATIONAL SCIENCE AND TECHNOLOGY CIMMISSION OF CHINA AND ORGANIZED BY SHANDONG PROVICNE DEPARTMENT OF SCIENCE AND TECHNOLOGY. ACCORDING TO THEIR APPRAISAL, THIS SERIES OF PRODUCTS ARE"THE ONLY PRODUCTS IN THE SAME FIELS THAT HAVE REACHED THE ADVANCED DOMESTIC LEVEL IN GERNERAL INDEX ANF ATTAINED THE ADDVANCED WORLD LEVEL IN SUCH ASPECTS AS PRODUCTIVITY, NOISE CONTROL, OPERATION AND ENVIRONMENTAL PRODUCTIONAL". THE HZS180 CONCRETE MIXING PLANT IN THIS SERIES WAS APPRAISED AS A NEW KEY PRODUCT OF CHINA IN 2005.