Longkou Jingyi Industry and Trade Co., Ltd. was the first enterprise in Longkou City to work on the production of the powder metallurgy. With the decades of experience in the production of the powder metallurgy, it owns Longkou Jingyi Powder Metallurgy Co., Ltd. and Longkou Jingyi Heat Treatment Center.It has over 100 sets of production equipments and over 20 automatic powder metallurgy rolling mills (from 6 tons to 315 tons). It mainly produces copper-based, iron-based and stainless steel powder metallurgy products and all kinds of high-strength powder metallurgy structural parts, which are widely used in textile machinery, electric power tools, auto parts, household appliances, hardware tools, wood-working machinery, printing machinery, etc. The products are exported to Japan, the USA, India, Singapore, etc.The heat treatment center has automatic vacuum furnaces, mesh belt furnaces, carburizing furnaces, high-frequency furnaces, etc. It mainly supplies heat treatment processing to the major auto parts factories in Longkou City and the surrounding cities and the heat treatment to the metallic sintered products in its own factory. 龍口精益工貿(mào)有限公司，同時(shí)擁有龍口精益粉末冶金有限公司和龍口市精益熱處理中心。是龍口市最早從事粉末冶金生產(chǎn)的企業(yè), 有幾十年的粉末冶金生產(chǎn)經(jīng)驗(yàn).企業(yè)主要生產(chǎn)設(shè)備100多臺(tái)套,全自動(dòng)粉末冶金軋機(jī)6噸--315噸20多臺(tái).主要生產(chǎn)各種銅基、鐵基、不銹鋼粉末冶金制品，各種高強(qiáng)度粉末冶金結(jié)構(gòu)零件，廣泛應(yīng)用于紡織機(jī)械、電動(dòng)工具、汽摩配件、家用電器、五金工具、木工機(jī)械、印刷機(jī)械等行業(yè)。產(chǎn)品出口日本、美國(guó)、印度、新加坡、等國(guó)家。熱處理中心主要為龍口市及周邊縣市各大汽車(chē)配件廠(chǎng)提供熱處理加工和本廠(chǎng)粉末冶金件的熱處理,有全自動(dòng)真空爐.網(wǎng)帶爐.滲碳爐.高頻爐等設(shè)備.