DataX Annotation is a professional data annotation firm based in Hanoi, Vietnam, catering to AI and machine learning teams globally. We focus on six main annotation services: NLP and text annotation, image annotation, video annotation, audio annotation, 3D point cloud annotation, and document and OCR annotation. Our clientele includes AI startups, research organizations, and large product teams developing computer vision, natural language processing, autonomous driving, and conversational AI technologies. Founded by leaders with extensive experience in IT outsourcing and AI services, DataX Annotation aims to address a prevalent issue in the market: AI teams often struggle to find a reliable annotation partner that offers both quality and effective communication. Our operations are built on two essential principles: maintaining a 99% accuracy rate on client validation sets and ensuring complete transparency throughout all projects. Our annotation process integrates skilled human annotators with AI-supported pre-labeling and rigorous multi-step quality control. Each project features inter-annotator agreement monitoring, structured quality assurance reviews, and audit-ready reports. We provide support for RLHF and instruction tuning datasets for LLM fine-tuning, medical imaging annotation, and multilingual NLP annotation in languages such as English, Vietnamese, Thai, Malay, and Mandarin, as well as intricate multimodal annotation processes. Our clients span across the US, UK, Australia, Singapore, Germany, Japan, New Zealand, and more. Operating from Vietnam allows us to offer significant cost benefits to our clients while maintaining high quality, and our position in the APAC timezone makes us an ideal partner for teams developing AI products for the Southeast and East Asian markets. Our key services include data annotation, data labeling, NLP annotation, image annotation, video annotation, audio annotation, 3D point cloud annotation, RLHF training data, LLM fine-tuning datasets, medical image annotation, and multilingual annotation.