Yung Chi Y.C. Industrial Co., Ltd. was established in 1975 primarily in manufacturing sprayer equipments as well as repairs. In 1992, we began to design and produce knapsack power sprayers and portable power sprayers. We are experienced in agricultural system and believe a good portable sprayer is comfortable to use and energy efficient. All components of Knapsack power sprayer have passed chemical and durability test. Over the years, our products have expanded to overseas for agriculture and gardening purposes.