How many companies in Panjin make waterproof materials?

1 Panjin Yu Wang Waterproof Building Materials Group Co., Ltd. Yu Wang Elastomer (SBS), Plasticizer (APP) Modified Asphalt Waterproof Membrane, (OMP) Modified Asphalt Polyethylene Tire Waterproof Membrane 2 Beijing Oriental Yuhong Waterproof Technology Co., Ltd. Yuhong Elastomer (SBS), Plasticizer (APP) Modified Asphalt Waterproof Membrane 3 Wujiang Yuexing Building Waterproof Material Co., Ltd. Xingyuewang Elastomer (SBS), Plasticizer (APP). Modified asphalt waterproofing membrane 4 Weifang Hongyuan Waterproof Material Co., Ltd. Hongyuan Elastomer (SBS) modified asphalt waterproofing membrane, polyethylene polypropylene composite waterproofing membrane 5 Changshu Sanheng Building Materials Co., Ltd. Mink EPDM waterproofing membrane 6 Guangdong Keshun Chemical Co., Ltd. CKS Keshun self-adhesive rubber asphalt waterproofing membrane, self-adhesive polymer modified asphalt polyester tire waterproofing membrane 7 Weifang Yuhong Waterproof Material (Group) Co., Ltd. Yuhong Elastomer (SBS) Modified asphalt waterproofing membrane 8 Beijing Sheng Jie Waterproof Material Co., Ltd. brand polyethylene polypropylene composite waterproofing membrane 9 Owens Corning (China) Investment Co., Ltd. Owens Corning glass fiber tire asphalt tile 10 Shenzhen Zhuobao Technology Co., Ltd. Zhuobao self-adhesive rubber asphalt waterproofing membrane, self-adhesive polymer modified asphalt polyester tire waterproofing membrane1kloc-0/ Hangzhou Jinwu Waterproof Material Co., Ltd. Tianyi Elastomer (SBS) and Plastic (APP) Modified Asphalt Waterproof Membrane 12 Wuhan Meilixin New Building Materials Co., Ltd. YTL Self-adhesive Rubber Asphalt Waterproof Membrane, Self-adhesive Polymer Modified Asphalt Polyester Tire Waterproof Membrane 6544 Modified Asphalt Waterproof Membrane 15 Shanghai Taian Engineering Industry Co., Ltd. Huang Yue EPDM, PVC 16 Beijing Dongfanghong Waterproof Membrane. Modified asphalt waterproofing membrane 17 Daming New Building Waterproof Material Co., Ltd. Daming EPDM Waterproof Membrane 18 Woniushan New Waterproof Material Co., Ltd. Xuzhou Wodi Elastomer (SBS) and Plasticizer (APP). Modified asphalt waterproofing membrane 19 Tianjin Yuhong Building Waterproof Material Co., Ltd. Yuhong Glass Fiber Tire Asphalt Tile 20 Xinxiang Riyue Waterproof Technology Co., Ltd. Gloria Elastomer (SBS) Modified Drainage Pipe