Zhengzhou Hongji Machinery Manufacturing Co.,Ltd Was found in 1968, professional in LWA, Leca equipments ... , garding , chemical, construction etc field. Zhengzhou Hongji Machinery Manufacturing Co.,Ltd Was found in 1968, professional in LWA, Leca equipments manufacturing ... air. The whole flow chart made by our company, both engineer saving and environment friendly.LWA Kiln model: ø1900X20,000/ ...