Our company has *7 years experience in import industry. We has imported Outback, Raptor RV from US to clear customs for our customers. Since more and more people are getting a higher living standard, they are seeking for a more colorful and interesting life style. So, I personally think RV import would be a big market for international trade. Here are the tips I conclude for the RV import. 

docs required for importing RV：

1. enterprise business license, tax registration certificate, orgainization code certificate
2. invoice
3. trade contract English and Chinese version
4. certificate of merchandise
5. drawing paper (1. overview plan 2. line graph 3. structure plan 4. stability plan 5. instruction)
6. at least 5 pics of RV
7. trade contract

RV import Process：
1. apply RV import registration from Customs
2. provide RV drawing paper
3. conduct RV technical examination in Hong King
4. apply for auto import permit
5. prepare for sea freight from Hong Kong to mainland China
6. clear customs
7. apply for RV Safety Certification
8. apply for RV certificate of ownership
9. apply for certificate of citizenship and airworthiness certificate
*0. get Chinese license plate