Why is the price of spot silver/spot crude not the same on every exchange?

each spot exchange claims that its products are quoted in line with international standards by the London silver /wti crude oil is converted by exchange rate, but silver quotes for each of the different spot trading platforms / crude oil quotes are different, why?

The exchanges did not disclose the specific parameters of their quotations. But according to King_ Desert Research, found the main reasons are as follows:

1. The financial data sources adopted are not the same. Many of the domestic spot trading platforms use Bloomberg data, but some spot trading platforms use Reuters data, as well as other financial data providers.

2. The exchange rate used is not the same. Some spot trading platforms use fixed exchange rates, while some spot trading platforms use floating exchange rates. The floating exchange rate has 5 different prices, namely: Spot bid price, cash bid, spot price, cash offer, BOC conversion.

3, the server delay degree is different. Spot trading platform of the computer room server access data will have a certain delay, and delay time is configured, the network real-time speed, location and other factors affect the different.

4, the use of the domestic market index is not the same weight. Now many spot trading platform quotes will refer to the domestic mainstream market prices, and the main market of the platform used by the weight of different, or even use the reference market will be different, such as a market can focus on the silver quotation of the previous period, while the other market will focus on the gold price of silver.

5. The exchange intends to do so. This is because at present there is no very authoritative index to guide the price, so every spot exchange wants the price index on its platform to represent the "China Index" and gain more recognition. This price index obviously cannot coincide with the price index of other trading platforms, so each spot trading platform intends to adjust the parameters so that it is not the same as other platforms.

Why is the price of spot silver/spot crude not the same on every exchange?