Shandong Hanhai Greenhouse Horticulture Engineering Co., Ltd. Shandong Hanhai Greenhouse Horticulture Engineering Co., Ltd. is a comprehensive high-tech enterprise engaged in technical research and development, engineering design, production and processing, product sales, installation and construction, and technical service consultation of modern greenhouses and urban landscape modeling because of its preferential price and complete services. Greenhouse, also known as greenhouse, refers to a room with cold-proof, heating and light-transmitting facilities for cultivating thermophilic plants in winter.