Find Verified Industrial Parts Suppliers Online
Haizol connects you with industrial parts suppliers in China, drawn from a network of 800,000+ listed factories we've built since 2015. Browse mechanical parts, power transmission, linear motion, and hydraulic and pneumatic components, all organized by category.
Your Gateway to Reliable Custom Manufacturing Suppliers
- Compare Verified Suppliers
- Get Access to Detailed Factory Profiles
- Exclusive Factory Visits & Sourcing Tours
Find Industrial Standard Parts Online
Haizol's standard parts directory lets you find industrial standard parts online, spanning categories from Power Transmission Parts and Linear Motion Components to Hydraulic Components and Mechanical Parts.
Sourcing a standard part usually starts with the same frustration: the component's function is clear, but its name or part number rarely is, and most catalogs are built around brand and part number first. On Haizol, categories break down to the subcategory level, for example Ball Screws vs. Linear Guide Rails under Linear Motion Components, so a part can be matched to a specialized factory by function alone.
Whether you need a single replacement part or a full production run, quantity, pricing, and lead time are confirmed directly with whichever factory you choose on Haizol.
Frequently Asked Questions
How do I find the right custom manufacturer for my part?
Start with what the part needs: material, process, tolerances, quantity, and required certifications. Then contact multiple custom manufacturing companies and compare their fit to your requirement. You can use Haizol to compare capability-matched suppliers' side by side using their factory profiles, which include equipment lists, certifications, and audit reports.
How do I know if a custom manufacturing company on Haizol is legitimate and will deliver good quality?
Look at business registration, certifications (ISO 9001, IATF 16949, AS9100, ISO 13485) with valid-until dates, and quality control equipment before committing. Each Haizol factory profile includes a verification audit report covering facility size, employee count, machine inventory, QC equipment, and certification validity dates, giving you a documented basis for comparison beyond the factory's own claims.
Why do quotes from different custom manufacturing companies vary for the same part?
Price differences reflect setup and programming time, tooling, material grade, quality control level, and how closely a factory's process matches your drawing. Unusually low quotes typically signal misread specifications or missing production steps. The fastest way to compare factory pricing is to submit an RFQ submission on Haizol and compare the quotes side-by-side. 90% of submitted RFQs receive 8+ competing quotes from custom manufacturing companies.
Does Haizol have a minimum order quantity (MOQ) for custom manufacturing?
There is no platform-wide minimum order quantity on Haizol. Individual factories on Haizol decide whether to quote based on part complexity, process, and volume, so prototype and single-unit orders can still receive quotes, and higher quantities attract more competitive pricing and more supplier interest.
What do I need to prepare before requesting a quote for custom parts on Haizol?
For an accurate, comparable quote, prepare your CAD files or drawings (STEP, IGES, DWG, or PDF), material specification, critical tolerances and surface finish, expected quantity, and any required certifications. RFQs submitted with complete specifications produce more accurate, comparable quotes within its 24-hour turnaround.
How do I know which Haizol manufacturing category fits my part?
Match the category to your part's primary production process. CNC machining suits precision-machined metal or plastic parts; sheet metal fabrication suits formed and welded components; plastic molding suits high-volume plastic parts; metal casting suits complex or heavy metal shapes; and stamping, forging, or rapid prototyping cover more specialized needs. Haizol's category pages group verified factories by process, so filtering by material and part type narrows the list further for parts spanning more than one process.
Can Haizol handle parts that need more than one manufacturing process?
Many parts need more than one process, for example a CNC-machined component that also needs finishing, or an injection-molded part with post-assembly work. Submit one RFQ to Haizol describing the full requirement. Factories quoting on Haizol are matched by full capability, so multi-process jobs are routed to suppliers equipped to handle every step.