Beijing Fenglonghui Tsev cog khoom Technology Co., Ltd. Chaw nyob 3rd Floor National Center for Corp Germplasm Conservation, Suav Academy ntawm Agricultural Sciences, No.12 South Zhongguancun Street, Haidian District, Beijing 100081, Suav teb Tel 86 10 62149667 E-mail market@greenhousepolyfilm.com Fax: 86 10 82108614 Whatsapp 86 134 3931 2093