Macross released its interim results announcement on July 4. The net profit was 59 million yuan to 66.7 million yuan, an increase of 55% to 75%. Macross said that the first-half year-on-year increase in net profit was due to three reasons: the increase in operating income and the increase in product gross profit margin, the increase in investment income from joint ventures and the increase in non-operating income.
It is understood that the net income from the transfer of buildings and buildings is the main source of the increase in non-operating income. In a quarterly report released in 2013, it showed that Wanjia Le achieved a business income of 574.6610 million yuan, a year-on-year increase of 21.38%; in terms of investment income, the investment company Guangdong Nortel Communications Equipment Co., Ltd. in 2012 and the joint venture Shunde Electric Equipment Co., Ltd. made profits. The company’s investment income has increased significantly. According to 2012 annual statistics, Wanjiale has obtained investment income of RMB 61.988 million, which has increased by 6 times year-on-year.
A few days ago, Wanjiale announced that it plans to acquire 10% equity of Shunde Equipment legally held by Schneider Southeast Asia in cash through Shunde Electric, a wholly-owned subsidiary of the company, for 172 million yuan. After the completion of the transaction, the company will become the controlling shareholder of Shunde Equipment and indirectly hold its 60% equity through Shunte Electric.
Optical time-domain reflectometer (English name: optical time-domain reflectometer, OTDR) is an instrument that understands the uniformity, defect, fracture, and coupling of the optical fiber through the analysis of the measurement curve. It is made according to the principle of light backscattering and Fresnel reverse. It uses the backscattered light generated when light propagates in the optical fiber to obtain attenuation information. It can be used to measure optical fiber attenuation, connector loss, fiber fault location and understanding The loss distribution of the optical fiber along the length, etc., is an indispensable tool in the construction, maintenance and monitoring of the optical cable.
The optical time domain reflectometer will inject a series of optical bursts into the optical fiber for inspection. The method of inspection is to receive the optical signal from the same side of the incident wave, because the incident signal will be scattered and reflected back when it encounters a medium with a different refractive index. The intensity of the reflected light signal will be measured and is a function of time, so it can be converted into the length of the optical fiber.
The optical time domain reflectometer can be used to measure the length and attenuation of the optical fiber, including the fusion splice and transition of the optical fiber. It can also be used to measure the interruption point when the fiber is broken.
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