We are a supplier of military antenna equipment to many countries and are now establishing ourselves as a manufacturer of military antennas for a number of European countries - with an agent in Turkey. We believe that our ability to design and manufacture will meet the needs of all customers. Our military antennas meet military specifications. We manufacture a wide variety of antenna jammers, handheld and manpack antennas, antenna goosenecks, antenna whips, and so on. With a Mast antenna - AM-D120-HA135-RA - the product meets MIL- standards, has a payload of 30Kg, a mast lifting time of fewer than 5 minutes, and can be performed with a Control box or hand-held controller. The product also includes an Emergency Button and an automatic stop system. Furthermore, the product MJ-05M06G03A-NF - one of the most popular today - is 1.5kg light, has high features, and is simple to install, with frequency levels ranging from 500MHz to 6GHz, 3DBi. Not only that, but for many years we have been a supplier of FT-7500 - Marine antenna for the region.

正因為如斯，如果沒有吳三桂等事蹟，清兵是不是就不會入主華夏展開統治，歷史就會改寫呢？

明代深知該地區的重要性，從洪武年間即投入扶植。山海關城牆高達14公尺、厚7公尺，護城河寬度五丈，深三丈，是以古代戰爭常用的攻城手段，不管雲梯、鑿牆都幾近不可能攻破。

▲歷史景點山海關。（圖／翻攝自百度百科）

古時，中國華北與東北之間，主要依托四條舊道，分別無終道、平岡道、盧龍塞道與傍海道。個中無終道、平岡道、盧龍塞道地形險峻，很是不容易移動，況且是聲勢複雜的部隊，只有傍海道地勢相對平展，傍海道也就是山海關的位置。

名將吳三桂「引清兵入關」的歷史故事，相信許多人都略有耳聞，其時的佈景也就是「山海關」。事實上，在吳三桂之前，努爾哈赤與明朝交兵跨越20年，遲遲打不進中原，山海關就飾演了一個極為主要的防守腳色。

山海關其實不單只是一座城，廣義來講範圍很大，包括東羅城、西羅城、南翼城、北翼城、威遠城、寧海城、老龍頭、南水關、北水關、旱門關、角山關等一系列要塞，培養一句話「擊首則尾應，擊尾則首應」。除強大的要塞聯貫以外，明朝在山海關一帶也屬下「兵部」，由朝廷直接收理，軍力天然是一時之選。

The FT-RF main profession in R&D and manufacturing of antenna, be alongside of to be subjected to any OEM of nation and ODM, provide the product of the best quality and let the sale has the price of competition ability most , is the target that the FT-RF has been making great effort.

國際中間／林瑞恩報道

山海關又被稱為「榆關」，位於現今中國河北秦皇島，並有著「天下第一關」的歷史景點，1961年被中國國務院列為「第一批重點文物珍愛單元」。

本篇文章引用自此: https://www.setn.com/News.aspx?NewsID=1103993&utm_source=setn.com&utm_medium=viewall&utm_campaign=vi

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