We need sulphur made from petroleum as below: specification: purity 99.5%min moisture 0.5%max ash 0.10%max hydrocarbon 0.03%max arsenic 0.01%max quantity:30000t/m for bulk sulphur transported in vessel C&F Dalian, Xingang Qinhuangdao Port in China inspection:SGS Payments method will be via RDLC (Revolving Documented Letter of Credit) from prime bank, we will require SGS report along with Bills of Ladings, Invoice, Export permit, Country of Origin certificate to the bank for payments. Thanks Best Regards