GUANGZHOU, Aug. 21 -- Customs in southern China recently seized 600 tonnes of smuggled electronic cigarette oil, with a total value of 300 million yuan (about 44 million U.S. dollars).
Over 320 police raided four groups who were suspected of smuggling the oil from the United States, according to Zhou Bin, head of Gongbei Customs Office, which administers Zhuhai and Zhongshan cities in Guangdong Province.
The four companies were based in Shenzhen and Xiamen and supplied the majority of the e-cigarette oil in the Chinese market, according to Zhou.
In recent years, sales of electronic cigarettes have grown by more than 300 percent annually, but supervision of the industry is still weak, Zhou said.
Most of the oil sold in China is imported, he said.
Twenty people have been placed under criminal detention following the raid, and further investigation is underway.
外研版八年级英语上册课文翻译：Module 8
人教版八年级英语上册--Vocabulary Index
人教版八年级英语上册--Review of units 1-6
初二年级英语课文 Module 4 New technology
外研版八年级英语上册课文翻译：Module 1
初二年级英语课文 Module 2 Friendship
人教版八年级英语上册--Unit 12 What’s the best radio station?
Unit 11 What time do you go to school 教案
外研版八年级英语上册课文翻译：Module 5
人教版八年级英语上册--Irregular Verbs
人教版八年级英语上册--Unit 6 I’m more outgoing than my sisiter
Unit 11 What time do you go to school？
人教版九年级英语：Unit 4 What would you do?--2
初二英语上册课文翻译【外研版】
人教版八年级英语上册--Unit 4 How do you get to school?
初二年级英语课文 Module 9 Heroes
初二年级英语课文 Module 3 On the radio
外研版八年级英语上册课文翻译：Module 9
人教版八年级英语上册--Word and Expressions in Each Unit
人教版八年级英语上册--Unit 9 When was he born?
教案：Unit2 Is this your pencil
外研版八年级英语上册课文翻译：Module 2
Unit 6 Do you like bananas教案（总第28课时）
新目标七年级英语上册期末复习资料
初二年级英语课文 Module 6 Entertainment
人教版八年级英语上册--Unit 8 How was your school trip?
初二年级英语课文 Module 1 hobbies
初二年级英语课文 Module 8 Public holidays
外研版八年级英语上册课文翻译：Module 11
人教版八年级英语上册--Unit 11 Could you please clean your room?