插入式黃銅接頭
∗利用螺帽與螺套接合。
∗本體設計有插芯，可發揮高度密封性。具優異耐壓性、耐震性。
∗直接頭採止瀉設計，不需另行使用止瀉膠｡
∗符合JIS B 8381-1995(空壓用捲管接頭)規範。
Prefered Stock
This represents some degree of ownership in a company but usually doesn’t come with the same voting rights. (This may vary depending on the company.) With preferred shares, investors are usually guaranteed a fixed dividend forever. This is different than common stock, which has variable dividends that are never guaranteed.
Another advantage is that in the event of liquidation, preferred shareholders are paid off before the common shareholder (but still after debt holders). Preferred stock may also be callable, meaning that the company has the option to purchase the shares from shareholders at anytime for any reason (usually for a premium).
Some people consider preferred stock to be more like debt than equity. A good way to think of these kinds of shares is to see them as being in between bonds and common shares.