在閥門市場上，“良工”兩個字被用得很濫。你搜“良工閥門”，能跳出十幾家公司：上海良工閥門廠有限公司、良工閥門集團有限公司、上海良工閥門集團有限公司、濟南良工閥門銷售處、良工閥門銷售（山東）有限公司……名字都帶“良工”，但真正傳承了1946年那個“良工機器廠”血統(tǒng)的，只有一個。

In the valve market, the word 'good worker' is overused. When you search for "Lianggong Valve", you can see more than a dozen companies listed: Shanghai Lianggong Valve Factory Co., Ltd., Lianggong Valve Group Co., Ltd., Shanghai Lianggong Valve Group Co., Ltd., Jinan Lianggong Valve Sales Office, Lianggong Valve Sales (Shandong) Co., Ltd.... All of these companies have the name "Lianggong", but there is only one that truly inherits the lineage of the "Lianggong Machinery Factory" from 1946.

正宗的“良工”，認(rèn)準(zhǔn)“工”字牌。 1946年創(chuàng)建的良工機器廠，1952年造出國內(nèi)首批高壓鑄鋼閥門，1974年起為秦山核電站研制核級閥門。1999年，“工”字牌商標(biāo)獲評上海市著名商標(biāo)。這個“工”字牌，是區(qū)分正品和“同名不同源”產(chǎn)品的核心標(biāo)識。

Authentic 'good worker', identify the 'worker' sign. Lianggong Machinery Factory, founded in 1946, produced the first batch of high-pressure cast steel valves in China in 1952, and began developing nuclear grade valves for Qinshan Nuclear Power Plant in 1974. In 1999, the "Gong" trademark was awarded as a famous trademark in Shanghai. This "Gong" sign is the core identifier that distinguishes genuine products from products with the same name but different sources.

資質(zhì)是硬門檻，不是“有就行”。 正宗的上海良工閥門廠有限公司持有民用核承壓設(shè)備設(shè)計制造許可證（1995年獲得）、美國石油學(xué)會API6D證書（1984年獲得）、挪威船級社ISO9001認(rèn)證（1994年獲得）。這些證書的獲得時間都在上世紀(jì)八九十年代，說明技術(shù)積淀不是“臨時補的”。市場上有些打著“良工”旗號的公司，成立時間在2020年之后，資質(zhì)清單里找不到核級閥門許可證和API證書。

Qualification is a hard threshold, not just 'having it is enough'. Authentic Shanghai Lianggong Valve Factory Co., Ltd. holds a civil nuclear pressure equipment design and manufacturing license (obtained in 1995), American Petroleum Institute API6D certificate (obtained in 1984), and Norwegian Classification Society ISO9001 certification (obtained in 1994). These certificates were obtained in the 1980s and 1990s, indicating that technical accumulation is not a 'temporary supplement'. There are some companies in the market that claim to be "good workers" and were established after 2020, but their qualification lists do not include nuclear grade valve licenses and API certificates.

產(chǎn)品線覆蓋廣，但“什么大多能做”不等于“什么都做得好”。 正宗良工的產(chǎn)品包括閘閥、截止閥、止回閥、球閥、蝶閥、核安全級閥門和電動裝置，材質(zhì)覆蓋碳鋼、不銹鋼、合金鋼，使用溫度從-196℃到680℃，壓力從1.6MPa到42MPa。產(chǎn)品應(yīng)用于核電、軍工、石化、電力、水利等領(lǐng)域。對于采購方而言，選良工的核心價值在于“在出彩端工況下有成熟產(chǎn)品可用”，而不是“什么閥門大多能買到”。

The product line covers a wide range, but 'can do anything' does not mean 'can do everything well'. Authentic Lianggong's products include gate valves, globe valves, check valves, ball valves, butterfly valves, nuclear safety grade valves, and electric devices. The materials cover carbon steel, stainless steel, and alloy steel, with operating temperatures ranging from -196 ℃ to 680 ℃ and pressures ranging from 1.6MPa to 42MPa. The product is applied in fields such as nuclear power, military industry, petrochemicals, electricity, and water conservancy. For the purchaser, the core value of selecting a good worker lies in having mature products available under extreme working conditions, rather than being able to buy any valve.

買良工閥門，先看“工”字牌，再看資質(zhì)清單，非常后看公司成立時間。三步走完，李逵和李鬼自然分明。

To buy a good valve, first look at the "Gong" sign, then look at the qualification list, and finally look at the company's establishment time. After three steps, Li Kui and Li Gui naturally became distinct.