When applying online, some salespeople will go to your unit to check the authenticity of your unit. Some will even take photos of your unit’s plaque, your office furnishings and yourself, for authenticity. Generally, The more certificates you submit, the higher the probability and limit of getting the card. Proof of salary is a must. If you have a car, you have a driving license. If you have a house, you have a house certificate. In addition, social security, medical insurance, etc. are also helpful, and academic certificates and the like. Of course, the most important thing is proof of assets, deposits, etc. Credit cards from IQ are also helpful, but you have to use the card for more than half a year. If you have a platinum card from IX, using the card for half a year will be more helpful for getting the card.