Hangzhou Huangyue Industry Co., Ltd was founded 2009, which is a sister company of Tonglu Fenfei, HY Industry is professional to produce Metal pipe fitting cover system, we named it as ”HY Insulation System”, and use “FENFEI” as its trade mark. Our elbow covers are made in two high precision formed two halves to cover and protect insulated 45 degree and 90 degree pipe elbow and Tee covers. These elbow covers were applied in all insulation areas.We are insist on the development tactics: ”Looking forward to the future, Sustainable development strategy, Set up a new energy saving pipe insulation cover system”, constant on progress, exploration and innovation, actively create our company as a insulation navigator in future.