how to repair zipper slider

{"cid":"91203004","title":"DIY Craft Silver Metal Zipper Sliders Replacement Antioxidant Rust Resistance Antitear","imgUrl":"https:\/\/img.chinax.com\/nimg\/d4\/b4\/21c7a9553dc0e5b08c700e2e36c8-200x200-1.jpg","attrs":{"Price":"Negotiated price","Brand Name":"Alalamu","Model Number":"Alalamu","Minimum Order Quantity":"1 PCS","Delivery Time":"7-15 days","Certification":"ISO","Place of Origin":"china","Payment Terms":"L\/C T\/T","Supply Ability":"10000PCS\/Month","Packaging Details":"pp bags with carton","Item":"Zipper Repair","Application":"Bags, Jackets Backpacks, DIY Craft Purse","Color":"Light silver\/Silver\/Customized","Type":"Metal Zipper Sliders","Material":"Metal","Feature":"Small volume and light weight"}}

{"cid":"91225595","title":"Customizable Moisture\u2011Shielding Zipper Slider Pouches for Eyeglass Frames Lens Parts & Optical Repair Kit Packaging","imgUrl":"https:\/\/img.chinax.com\/nimg\/52\/36\/86cb4ec0b051873e6f3d1e112b62-200x200-1.jpg","attrs":{"Brand Name":"Customization Available","Model Number":"None","Minimum Order Quantity":"100","Delivery Time":"7-14 days","Place of Origin":"China","Certification":"SGS CTT ROHS REACH ISO9001","Closure Type":"Slider Zipper Closure","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union","Packaging Details":"Woven bag \/ Carton box","Material Options":"LDPE, LLDPE, HDPE, CPE, PVC, EVA","Vent Holes":"Optional","Thickness":"50 - 150 Microns per side","Reusability":"Multiple uses","Print Colors":"Up to 8 colors"}}