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 Outstanding nominal value as of the current date

Average price of a bond, in % of face value

The current yield indicates the ratio of the accrued coupon to the current market price of the bond. It can be used in cases where attachments are considered for a short period of time. In this situation, the change in the market price can sometimes be neglected.

Bond duration is a way of measuring how much bond prices are likely to change if and when interest rates move.

Effective yield to maturity. It considers both coupon income and profit/loss due to the difference between the purchase price and the repayment price. Effective yield shows the investor the return on invested funds with reinvested coupons and depreciation.

Listing level — stock exchange assessment of securities reliability.

The ratio of the annual coupon to the "dirty" price of the bond, including the accrued interest. This type of yield can be used in the case of short-term investments, when the investment horizon is within one coupon period.

Average purchase price of a bond, in % of face value

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Coupon yield % per annum of nominal value (coupon amount per year/nominal value)

 Simple yield to maturity. It considers both coupon income and profit/loss due to the difference between the purchase price and the repayment price. Simple yield shows the investor the return on invested funds without reinvested coupons.

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The fund expense ratio is the annual fee expressed as a percentage of a mutual fund or ETF's average assets, covering management, administrative, and other operational costs. It directly reduces investors' returns.

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QuantumCTek Co., Ltd., together with its subsidiaries, engages in the research, development, production, and sale of quantum communication, computing, and precision measurement products in China. The company offers quantum-secure communication network core equipment comprising miniaturized quantum key distribution terminals, and polarization coding quantum key distribution and management terminals; high speed and miniaturized time-bin phase-coding quantum key distribution terminals; portable ground stations for satellite QKD; quantum key management, key system exchange cipher, and optical switching machines, as well as wavelength division multiplexing terminals of quantum channels and classical channels; and fixed network encryption application products. It also provides mobile encryption application products; operating system software, such as Gou-Dun quantum-secure communication network management system, and Gou-Dun network operation and maintenance system; and quantum computer products. In addition, the company offers optoelectronic products comprising single-photon detectors; light sources; and random number sources, which include multi-function high speed ps-pulse laser sources, periodically poled lithium niobate waveguides, geiger-mode InGaAs avalanche photodiodes, micro-processor compensated variable optical attenuators, QFPS fiber phase shifters, manual polarization controllers, and dynamic polarization controllers, as well as teaching systems and scientific instruments; and single photon imaging, cold atomic gravimeters, and femtosecond laser frequency combs. Further, it provides technology development and verification; research and test experience development; technology promotion and application; and technical services. The company serves the government, finance, national grid, and other sectors. QuantumCTek Co., Ltd. was founded in 2009 and is based in Hefei, China.

QuantumCTek Co Ltd

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