Sanki Quality Products Co., Ltd. is established in 1960. We are the leading manufacturer in Thailand. We do both retail and wholesale business, including import and export of high quality construction materials. With our extensively experienced in construction materials field, we are here topresent our Automatic Adjustable Louver. The product is designed to maximize the beneficial of natural usage. Allowing heat and hot air to flow out and replace it with cold air from outside for better heat and air ventilation. Lighten the factory with the usage of direct sunlight to go through the factory. The system is easily installed, which make it suited to all type of factory both new and old. The product differentiates and offered more benefits to the factory construction, with the patent for hydraulic louver