There are so many Asian imports that look like that so a brand name might not count for much. My guess would be between 1000-2000 lb capacity when new. Have a Jet model from the Taiwan years that is a bit different shape but with 6mm chain (basically 1/4") that is rated at 2000 lbs. But that is probably on the better quality side before the flood of so many looking like yours that are only 1/2 ton models. Kinda depends if they used a good grade 70 chain or not
