Is there a big difference between black and yellow rubber hammers?

Black and yellow rubber hammers are very different. Butadiene rubber yellow and black are different kinds of rubber materials. Yellow rubber has good temperature resistance and low hardness, and is suitable for manufacturing water pump sleeves and engine suspension rubber. Black rubber has good oil resistance and is suitable for manufacturing automobile springs, shock absorbers and planetary gears.

How to set K-line parameters

Futures commodity prices fell below the production cost.

Is Jingao Technology a state-owned enterprise?

When the interest rate rises, why does 1: the expected return rate of stocks demanded by investors tend to rise? 2. Why does the present value of future cash flows received by option holders decrease?

How much is the foreign exchange lever suitable for beginners?

The only variable of standardized futures contracts is the transaction price. Why the price? Isn't the price fixed?

Does Shentong Express have a May Day holiday?

What does futures mean? What is this for?

How is Guan Peisheng treated in CITIC Securities Business Department? Is it stressful?