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9th international symposium on lead and zinc processing.Jan 28 2020 established in 1970 the pbzn symposium series is considered the leading international technical forum for the lead and zinc processing industries pbzn 2020 will convene operators engineers and researchers to exchange information about all aspects of current processing technologies for primary and secondary lead and.
We are a large-scale joint-stock enterprise integrating scientific research, production and sales.Our leading products have crushing equipment, sand making equipment, mobile crusher, etc., Each type of product is with complete specifications. All products have passed ISO9001, CE and GOST international quality system certification.