<Tr> <Th> 15 </Th> <Td> BYD </Td> <Td> BYD </Td> <Td> 437,857 </Td> </Tr> <Tr> <Th> 17 </Th> <Td> Geely </Td> <Td> Geely </Td> <Td> 425,773 </Td> </Tr> <Tr> <Th> 18 </Th> <Td> Peugeot </Td> <Td> Dongfeng PSA </Td> <Td> 384,005 </Td> </Tr> <Tr> <Th> 19 </Th> <Td> Citroen </Td> <Td> Dongfeng PSA </Td> <Td> 320,011 </Td> </Tr>

When were manufacturer responsibility regulations for heavy vehicles introduced in china