digger undercarriage parts cold forming

{"cid":"91186469","title":"For Yanmar 172141-38610 rubber track digger undercarriage track chain","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/28\/f7\/dcb8fc15585960c952a29354ec34-200x200-1.jpg","attrs":{"Price":"FOB price USD300-600 \/PCS","Brand Name":"Echoo","Model Number":"172141-38610","Minimum Order Quantity":"2 PCS","Delivery Time":"3-7 work days","Place of Origin":"Xiamen,China","Payment Terms":"L\/C, T\/T, MoneyGram","Supply Ability":"100000 PCS per month","Packaging Details":"Standard wooden pallet","Product Name":"172141-38610 Rubber Track Track Chain","Application":"For Excavator","Keywords":"Track Link \/ Steel Track","Material":"50Mn","Warranty":"1 Year","Condition":"100% New","Part Number":"172141-38610","Color":"Black"}}

{"cid":"91216645","title":"40Cr steel 15-40Tons Excavator Bucket Bushing Digger Undercarriage Parts","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/44\/a8\/b3433865d4d0e23cb9b20046a2ce-200x200-1.jpg","attrs":{"Brand Name":"kx","Model Number":"203MJ-00062","Minimum Order Quantity":"100 Price","Delivery Time":"5-8days","Certification":"CE\\ISO","Place of Origin":"Fu Jian","Payment Terms":"L\/C, T\/T","Supply Ability":"1000000PCS\/Week","Packaging Details":"carton","Warranty":"1 Year","Showroom Location:":"None","Bolt Type":"Excavator Bulldozer Track Pad Bolts Nuts","Application:":"Hydraulic Breaker","Suitable Excavator(ton):":"15-40 Tons","Applicable Industries":"Construction works","Warranty Time":"2000 Hours","Available colors:":"silvery, black","After-sales Service Provided:":"Free spare parts, Video technical support, Online support, Field maintenance and repair service, Field installation, commissioning and training, Engineers available to service machinery overseas"}}