MFG Manufacturer Directory

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Impro Industries USA, Inc.

Diamond Bar, California

Job Shop / Contract Manufacturer


Custom manufacturer offering investment casting, sand casting and precision machined parts. Processes include lost wax investment casting, automatic resin sand and green sand iron casting and turning, milling, grinding, honing, drilling, hard turning, and 4 and 5-axis machining capabilities with a variety of weight and size specifications. Available in rapid prototype and production runs. Materials worked with include steel, aluminum, titanium, and superalloys for investment casting and ductile, gray iron, CGI for sand casting, and aluminum alloy and carbon steel, stainless steel, alloy steel, titanium, superalloys for precision machining. Serves industries such as automotive, aerospace, high horsepower engine, recreational boat and vehicle, and medical. Provides on-site engineering support, tooling design/manufacture, heat treatment, surface treatment, laboratory testing, and warehousing services. AutoCAD, SolidWorks® files, and blanket orders accepted. Lean manufacturing capable. Emergency and rush services are available. Meets ANSI, ASME, ASTM, AWS, QS, SAE, TS, DOT and AS standards. To learn more about our capabilities, visit our website: Contact Us today for your next project.

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HTT technology Inc.

Diamond Bar, California

China based manufacture. we service USA market by provide professional service and precision machining parts for over 10 years, We have office in California and easy for US customer communication and manage the orders, We deliver the customer customized parts on time with excellent quality.

JJ Machining, LLC.

Diamond Bar, California

Job Shop / Contract Manufacturer


I started my shop in 2005, After being layed off with 29 years of service. 20 of those years as production lead. Utilizing my RV and 2 of a 3 car garage, I now have 2 CNC milling machines, a 2216 and a 4020 both fadals and 1 hardinge lathe. 4 convensionals, 2 lathes and 2 mills, a saw,sanders, grinders, and deburr tooling, 3 'x 4' inspection table, brown and sharp cmm machine and verious hand inspection tools. Small shop low over head.

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