when to use rubbing compound

{"cid":"91222868","title":"Fluorine Free Waterproof Agent \/ Excellent Water Repellency \/ Does Not Affect Color Fastness \/ Improves Rubbing Fastness \/ Free Of Organic Halides \/ PFOA \/ PFOS","imgUrl":"https:\/\/img.ismap.com\/nimg\/38\/84\/ff6f11ab2d8471052f87938dd396-200x200-1.jpg","attrs":{"Brand Name":"Qiantai Chemical","Place of Origin":"Guangdong, China","Packaging Details":"Polyethylene plastic drum, 25KG per drum","Composition":"Special waterborne polyurethane","Appearance":"Milky white uniform liquid","Ionicity":"Weak cation","Solubility":"Extremely soluble in water"}}

{"cid":"91148935","title":"Multi - function compound cereal granola candy bar forming machine","imgUrl":"https:\/\/img.ismap.com\/nimg\/37\/4f\/cab069812a97226643ec897c5a41-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"Mikim","Model Number":"DRC-55\/65","Minimum Order Quantity":"1 Set","Delivery Time":"30 working days after received your payment","Certification":"CE Certificate","Place of Origin":"Jinan,Shandong Province","Payment Terms":"T\/T or L\/C","Supply Ability":"50 sets per year","Packaging Details":"Standard export wooden cases, wrapped with film firstly, then packed with strong wooden cases, which are suitable for long-term trip and multi-times loading & unloading by trucks.","Product Name":"Cereal Bar Forming Machine","Application":"produce all kinds of shapes of cereal bar \/ peanuts bar with the raw material of rice, millet, wheat, highland barley, peanuts, nuts, fagopyrum tataricm Gaertn, maize, broomcorn, Chinese pearl barley, buckwheat, etc.","Material":"SS304","Condition":"Continuous & automatic","Layout":"AutoCAD format according to client\u2019s workshop","Manual":"English version","Standard":"CE","Commissioning Service \/ Training":"Provide, but paid by Buyer","After-sales Service":"Full life"}}

{"cid":"90174994","title":"Custom Made Plastic Pouches Packaging , Side Gusset Coffee Packaging Bags","imgUrl":"https:\/\/img.ismap.com\/nimg\/da\/5f\/b8ad24e283ee7814ff159817197c-200x200-1.jpg","attrs":{"Price":"Depend on the bags you need.","Brand Name":"RB06","Model Number":"006","Minimum Order Quantity":"30,000 pieces","Delivery Time":"Within 15 days after confirm the deposit","Certification":"ISO 9001:2008","Place of Origin":"China","Payment Terms":"T\/T, Western Union","Supply Ability":"1000,000 pieces per week","Packaging Details":"Outer carton box, inner poly packing","color":"red","size":"500 gram","thickness":"150 microm","seal":"heat seal","usage":"for coffee bean packaging","logo":"custom printing","material":"laminated materilal"}}