According to the public information about Baidu map, it is known that Zheng 30 has goose materials, including jewelry and Yidege Sibaotang, as follows.

1. Chang Gan Jewelry is located at F 1, olive city Metropolitan Plaza, Erqi District, No.78 Hejiang Road, Zhengzhou City, Henan Province. Mainly engaged in jade carving and sales.

2. No.23-26, Yao Hui Sibaotang, Yidege, Jingguang Road11,Erqi District, Zhengzhou City, Henan Province, mainly engaged in jade carving and sales.