How many kinds of brand cement are there?

1. Conch (China well-known trademark, national inspection-free product, Anhui Conch Group Co., Ltd.) \ x0d \ x0d \ 2. Deng's Cement (China well-known trademark, national inspection-free product, Tangshan Jidong Cement Co., Ltd.) \ x0d \ x0d \ 3. Fu Jian Cement (National Key Cement Enterprise, Fujian Cement) 4. Huaxin cement (centennial brand, huaxin cement Co., Ltd., top ten cement brands) \ x0d \ x0d \ 5. Taihang Mountain Cement (a large enterprise in building materials industry, Hebei Taihang Cement Co., Ltd.) \ x0d \ x0d \ 6. Qinling Cement (national cement backbone enterprise, Qinling Cement Group, top ten cement brands) \ x0d \ 7. Dinglu Cement (national key cement enterprise, national inspection-free product, Yatai Group, top ten cement brands) \ x0d \ x0d \ 8. Yizhou Cement (a national large-scale cement enterprise, a national inspection-free product, Shandong Yizhou Cement Group Company) \ x0d \ x0d \ 9. Hongshi Cement (a national large-scale cement enterprise, a national inspection-free product)