Asian Polytrade Co., Ltd (APT) was established in 1981 as a supplier of Copper Sulphate. With our own production base, we can always guarantee our customers with high-quality products. Over the years. we have developed partnerships with both local and oversea manufacturers to support expanding demand for chemical usage along with Thailand’s Industrial growth. In 1984, we have formed a partnership with Unique Gas Plc. to set up the first Aqua Ammonia plant in the country. APT is the pioneer in providing Aqua Ammonia solutions in Thailand.