Tunga one technologies ltd., a company that developed and sold together, produced paints such as lead chromium yellow, molybdenum chromium red and rustproof paints, tens of varieties of chromium pigments, various types of lead chromium yellow and chromium paints, small colour differentials, strong cover, and light-resistant paints, which are widely used in paints, oils, paints, magma, plastics, engineering plastics, building materials, chrysanthemums, colored lines, leather, teaching materials, and nylon paints。