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Tholeiitic andesite was dredged from two sites on valu fa ridge vfr, a back-arc spreading center in lau basin.Valu fa ridge , at least 200 km long, is located 40-50 km west of the active tofua volcanic arc tva axis and lies about 150 km above the subducted oceanic plate.
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.