With the emphasis on the protection of crop germplasm resources by society and countries, the construction of crop germplasm resource banks has been intensified. The use of this equipment to store the collected crop germplasm resources can increase the effectiveness of protection of crop germplasm resources and help agricultural production. The protection of genetic resources on the institutionalized track is also conducive to the management and use of these collected germplasm resources and promote the development of agricultural breeding in China. At present, due to rapid population growth, overexploitation of biological species resources, introduction of exotic species, environmental pollution, and climate change, local crop germplasm resources in many areas of our country are gradually being lost and lost. These agricultural germplasms Resources could have become an important source of agricultural breeding materials. If they disappear, they will undoubtedly have a huge impact on the development of agricultural breeding. Therefore, in order to promote the development of agricultural breeding, the use of crop germplasm resources to protect crop germplasm resources has become a It is also of great significance for the healthy and sustainable development of modern agriculture to increase the protection and development of species resources at the same time. The germplasm resource bank of crops is an important equipment for collecting and preserving excellent crop germplasm resources, and agricultural breeding is the key to the sustainability of agricultural development and sustainable development. Therefore, the use of crop Germplasm Banks to rescue these endangered species Crop germplasm resources use a modern science and technology to protect biodiversity and protect species, so that the sustainable use of biological diversity, the fair and reasonable use of biological species and their genetic resources, and the promotion of harmony between humans and nature, To a certain extent, the germplasm resource bank of crops is not only closely related to the development of agricultural breeding, but also closely related to human development. The most important content at this stage is the use of a good germplasm resource bank to strengthen the research and development of species resources. Malic ACID is an organic compound with the molecular formula C4H6O5. It is a dicarboxylic acid that is made by all living organisms, contributes to the sour taste of fruits, and is used as a food additive. Malic acid has two stereoisomeric forms (L- and D-enantiomers), though only the L-isomer exists naturally. The salts and esters of malic acid are known as malates. The malate anion is an intermediate in the Citric Acid cycle. l-malic acid is used to resolve α-phenylethylamine, a versatile resolving agent in its own right. Malic Acid 99%, L-Malic Acid, DL-Malic Acid HENAN JINHE INDUSTRY CO.,LTD , https://www.hntitaniumdioxide.com