Where can I recycle second-hand calipers?

On Taobao. Second-hand calipers are recycled on Taobao, but the postage needs to be paid by individuals. Second-hand calipers are provided by Suzhou Lefeng Precision Instrument Co., Ltd., a manufacturer of precision measuring instruments and an integrated service provider of measuring instruments at home and abroad. The main products are non-standard measuring instruments such as pneumatic gauges, calibration gauges, stop gauges and ring gauges. Strong R&D, production and after-sales teams meet the needs of various customers.