After years of research and improvement, we have finally developed a fast-drive driver for bicycles and tricycles. When riding a bicycle, it is labor-saving and can travel faster to achieve the best results. It combines mechanical engineering - the best automatic variable speed drive, ergonomics - to adjust the scientific principle of the best force parts and physical inertia of the human body pedal when riding the bicycle, and give full play to the instantaneous maximum energy efficiency of the human body.
Metal Siding consists of three layers: the top material is special aluminum-zinc coated metal board, the core material is rigid high-density Polyurethane foaming with fire-retardant treatment, and the back material is fiber foil paper.Product Features Since Tenghui Siding itself has the characteristics of insulation, water-proof and fire-retardant, lightweight anti-seismic, convenient construction, sound insulation and lower noise, environment friendly, and lasting beauty etc.
Wall Metal Siding,Exterior Wall Siding Panel,Insulation Metal Siding
Xiamen Dahe PEB Construction Technology Co., Ltd. , https://www.dahecfsbuilding.com