With the “Mangrove Forest Conservation Project” is one of the Corporate Social Responsibility (CSR) projects aimed at environmental sustainability. which has the main objective to cultivate awareness of conservation, protection, rehabilitation, as well as sharing knowledge and experience about living with mangrove forests and coastal ecosystems to maintain natural balance to depend on each other sustainably as well as to promote and develop the quality of life of local people to be able to create a career by using mangrove forest resources with value bring in circulating income within the community. The main goal is to increase the green area in the mangrove forest by 10 rai and to propagate aquatic species by releasing the young aquatic species into the mangrove forest ecosystem. According to the plan to continue the project for 7 years (2018-2024) in an area of 10 rai and release aquatic species such as white shrimp, macaque crab, and blue crab at Pak Thale Subdistrict, Ban Laem District, Phetchaburi Province, through integrated cooperation throughout the region. The public and private sectors are PP Prime Public Company Limited, Phetchaburi Province, Phetchaburi Provincial Fisheries Agency, Phetchaburi Mangrove Forest Resource Management Center. Office of Marine and Coastal Resources 3, Department of Marine and Coastal Resources Ministry of Natural Resources and Environment, Pak Thale Subdistrict Administrative Organization, Ban Laem District, Phetchaburi Province, other local government agencies, media and people in the area which received the attention of the participants as well. And in 2021, the company has followed up on the operating results of the past year. including the growth of seedlings plant species that are planted in the mangrove forest area. The result is that the tree has an average growth rate of not less than 80% / area planted / year. and has a height of 4-5 meters, which is considered good.