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About us 
Tianjin Yiyuan Tongda Amperex Techonology Limited is a trading company located at Tianjin China. Our market covers Middle East, Southeast Asia, South America and West Africa etc. with rapidly expanding globally. There are managing varieties of products, mainly with various kinds of structural steel, such as I-Beam, Channel, Angle, H-Beam, C-Beam etc.; with steel sheet and coil, such as galvanized sheet, color coating sheet, hot rolled coil and cold rolled coil, plate of middle thickness, plate for ship, low alloyed plate etc.; with tubular goods, such as galvanized pipe, seamless pipe, welding pipe and square/rectangular tube as well as light and heavy steel rail and so on. Targeting at high market shares with supplying excellent quality of product and providing with perfect service for our customers, we are looking forward to cooperate with potential companies sincerely for mutual benefit and development together.Contact us
Units on a continuous cold-rolled strip steel or steel sheet,galvanized steel (electro galvanized,Pre-painted steel coil hot galvanized,Galvalume and cold-rolled plate) as the substrate, after surface preparation (degreasing and chemical treatment), Pre painted galvanzied steel coil for roofing sheet /ppgi/gl/gi/high quality by a roll coating method, applying one or more layers liquid coating, after baking and cooling the resulting sheet is coated steel.Pre-painted steel coil Since the coating can have a variety of colors, it is customary to coated steel is called color coated steel sheet (PPGI).
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Pre painted galvanzied steel coil for roofing sheet /ppgi/gl/gi/high quality is the material which uses galvanized steel as the basic substrate metal. PPGI is prepainted galvanized steel, also known as precoated steel, coil coated steel,Pre-painted steel coil color coated steel etc.Pre painted galvanzied steel coil for roofing sheet /ppgi/gl/gi/high quality A galvanized steel sheet in coil form is cleaned, pretreated, applied with various layers of organic coatings which can be paints, vinyl dispersions, Pre-painted steel coil or laminates.Pre painted galvanzied steel coil for roofing sheet /ppgi/gl/gi/high quality are applied in a continuous process known as Coil Coating.The steel thus produced in this process is a prepainted, prefinished ready to use material.