The demand for dry food and herbs is very high in the country. Most dried foods and herbs are exposed to bacteria during the drying process. To ensure the safety of dry food and herbs from being exposed to bacteria a heat house is needed. The Rumah…

Plastics have become a large environmental problem. Excess plastics will be deposited in landfills, where they will degrade slowly, potentially causing the original products to remain in landfills for hundreds or even thousands of years. Due to the…