The Professional Refrigerant Electronic Scales Rcs – 70 2100 Kg is a high-quality digital scale designed specifically for weighing refrigerants. With a capacity of 220 lb and a gross weight of 4kg, this scale is capable of accurately measuring the weight of various refrigerants. Manufactured in China, this product is reliable and efficient for use in HVAC and refrigeration businesses and industries. Its precision and ease of use make it a valuable tool for professionals in this field. No warranty as is. I tested myself and it works fine.