Beijing Yingherui Environmental Technology Co., Ltd (As known as YHR ) was established in 2005, a National High-tech Enterprise. First and biggest Glass-Fused-Steel Tank manufacturer in China since 1999. Biggest biogas equipment manufacturer in China. Top 3 biogas EPC contractor in China. Main Products: Glass-Fused-To-Steel Bolted Tanks & Silos Anaerobic digestion tank Membrane Gas-HolderBiogas Desulfuration SystemBiogas Upgrading System