Postal code inquiry 510290 East Second Lane of Wannian West Street, Longtan Village, Haizhu District, Guangzhou City, Guangdong Province 510315 East Ring Road, Longtan Village, Haizhu District, Guangzhou City, Guangdong Province 510315 Nanyue Street, Longtan Village, Haizhu District, Guangzhou City, Guangdong Province 510315 Wannian East Street, Longtan Village, Haizhu District, Guangzhou City, Guangdong Province