The Board of Directors and all officers and employees always focus strictly apply and implement the clean tea processing process to bring the company to develop in a sustainable way These teas are used from the best raw tea regions in Vietnam such as Lai Chau Lam Dong With a team of experts with extensive experience in growing and nurturing tea trees until harvest the most stable and best tea lines have been created NNST is one of the few enterprises in Vietnam that owns a tea bag filter line according to European standards meeting the needs of the market Using pinless technology heatfree filter paper is an affirmation towards the goal of public health NNST is honored to receive certifications such as ISO 22000 2018 HACCP HALAL