This is what I found online. I hope it will be useful to you.

No. 1 in China’s native pig brand ranking (online voting ranking), No. 1 native pig: a famous trademark in Guangdong Province and a national pollution-free agricultural product. Second place, Yao native pig: a famous trademark in Guangdong Province and a national pollution-free agricultural product. Third place, Tuhe Black Pig: a famous trademark in Shandong Province. Fourth place, Chu Muxiang: Green food A-level certification. Fifth place, Jingqishen: leading agricultural enterprise. Sixth place, Ankang native pig: Guangdong famous brand product. Seventh place, Xiangcun Black Pig: a leading agricultural enterprise. Eighth place, Bashan native pig: organic product certification. Ninth place, Tianlu Black Pig: National pollution-free agricultural product. Tenth place, Heijiabao