shanghai chinese customs authorities handle 2,773 case smuggle first 10 months year part nationwide crackdown china daily report friday cite senior official 2017 sword guard country gate campaign net 233 smuggle case involve weapons ammunition 474 case relate illegal drug 86 relate endanger species accord huang songping spokesman china general administration customs say 56 case involve rice smuggle traders try avoid pay duties import worth total 1.6 billion yuan 242.09 million previous case year involve import thai white sugar nine arrest try evade customs inspections disguise ship domestic vessel enter port yancheng open overseas traffic china also crack oil smuggle ring criminal gang buy 400 million yuan worth overseas oil products sell gas station zhejiang province customs authority say notice last month china environment ministry say week many 259 people arrest year smuggle 300,000 tonnes foreign waste country recycle reprocess china customs handle 2,773 case smuggle january-october paper