Heating Element manufacturer / supplier in China, offering Custom Modern Linear Vents Us Standards Registers & Grilles Stylish Linear Registers and Grilles for Home Ventilation Systems, 10*6" Modern AC Vent Cover Aluminum Air Vent with Standard Linear Slot Diffuser for Heating Registers & Grilles, OEM 14"X6" Square Registers & Grilles 3-Slot Standard Aluminum Alloy Vents Linear Slot Diffuser for Shopping Malls Factories Homes Office and so on.