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Medical Needle Suppliers

Specialising in the production of disposable syringes and injection needles, the company strictly follows the ISO quality system and is made of medical-grade polypropylene, which is sterilised by ethylene oxide to ensure that the products are sterile, non-toxic and non-allergenic.
Precision injection moulding process with safety protection design, providing 0.1ml-60ml multi-specification choices, accurate and clear dosage scale. The needles come in a wide range, and the bevelled surface is laser polished for smooth and painless puncture. Suitable for clinical injection, vaccination, biopharmaceutical filling and other scenarios. Triple sealed packaging ensures safe transport, effectively eliminating the risk of cross-infection and escorting medical safety.

Zhejiang INI Medical Devices Co., Ltd.
Zhejiang INI Medical Devices Co., Ltd.

Zhejiang INI Medical Devices Co., Ltd., founded in 1987, is a state-certified manufacturer specializing in sterile medical devices, including disposable insulin syringes. Between 2009 and 2019, to meet growing market demand, the company significantly expanded its operations by investing over RMB 100 million in a new facility within Wenzhou Yongqiang High-tech Park. The site spans a total construction area of approximately 26,000 m², which includes an 8,000 m² 100,000-class clean workshop.
Our manufacturing infrastructure is tailored to the scale and requirements of medical device production. It features advanced equipment, spacious production and storage areas, and a controlled cleanroom environment. We uphold a rigorous quality management system, enforcing strict control over every production step. This is supported by a fully equipped and qualified inspection department with comprehensive testing capabilities appropriate for our production scale.
The company has established a quality assurance system in accordance with YY/T 0287-2017 / ISO 13485:2016, achieving certification through the internationally recognized TUV agency. This certification grants us the CE mark, affirming compliance with European Community standards.
Committed to continuous innovation and improvement, we strive to exceed regulatory and customer expectations. Our goal is to be recognized as a leading manufacturer with a strong corporate image and brand reputation. We sincerely welcome partnerships with domestic and international medical institutions to jointly contribute to the cause of global health.

Certificate of Honor
  • CE Certificate - DD 60149424 0001
  • Medical Device Product Export Sales Certificate
  • Medical Device Export Sales Certificate
  • Medical Device Export Sales Certificate
  • Medical Device Export Sales Certificate
  • Medical Device Export Sales Certificate
  • SX 2081180
  • Made in Zhejiang Certificate
  • Wenzhou Industry Association Certification
  • High and New Enterprise Certificate 2022
  • Level 2A Certificate
  • Honours
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How a Syringe and Needle Producer Ensures Quality, Sterility, and Reliable Supply

Our manufacturing operation serves the medical sector with a strong focus on syringe and needle production for single-use injection applications. Recognized by many customers as reliable Medical Needle Suppliers, we collaborate with clinical, pharmaceutical, and distribution partners seeking consistent quality, efficient supply, and long-term manufacturing support.

Core Technical Features & Specifications

As a Syringe And Needle Producer, we manage the design and production of both components:

  • Barrel and plunger system: The syringe barrel is typically molded from medical-grade polypropylene or similar polymer. The plunger includes a rubber or elastomeric seal to maintain a smooth, leak-free fluid path. Graduated markings on the barrel allow volume indication.
  • Needle element: As Medical Needle Suppliers, we fabricate hypodermic needles in various gauges (e.g. 18G, 20G, 22G, 25G, 27G, 30G, etc.). Needle length is also tuned to application (e.g. ½ inch, 1 inch, shorter micro-needle lengths). Needles may be bevelled with precise angles (double or triple bevel) and polished to ensure smooth penetration.
  • Connection interface: In many Syringe And Needle products, the needle hub features a standard connection (e.g. a Luer slip or Luer lock design). The match between hub geometry and syringe tip must be reliable to prevent leakage or disengagement.
  • Sterility and packaging: Designed for single-use medical applications, each syringe and needle unit is sealed in sterile packaging after production and processed through a validated sterilization method. Depending on product and market requirements, packaging may be provided in individual pouches or blister formats, with sterilization carried out under controlled conditions such as EO or gamma treatment.

Manufacturing Workflow & Integration

As a Syringe And Needle Producer, our workflow typically comprises:

  • Needle tube drawing & processing: Stainless steel or specialty alloy tubing is drawn through dies, annealed, straightened, cut, bevel-ground, polished, cleaned, and inspected. This is the domain of Medical Needle Suppliers in part of our vertical integration.
  • Hub molding & syringe injection molding: Plastic hubs for attaching needles are injection-molded. Syringe barrels and plungers are similarly molded in dedicated clean-mold tools.
  • Assembly & bonding: The processed needle is inserted into the molded hub, either via ultrasonic welding, laser welding, or adhesive bonding. The hub is then mated to the syringe barrel/plunger subsystems. In the Syringe And Needle integration, tight tolerances must ensure alignment and fluid integrity.
  • Cleaning, drying, and inspection: After assembly, units undergo cleaning to remove residues, then drying under controlled conditions. Inspection steps verify dimensional accuracy, tip sharpness, alignment, and seal integrity.
  • Sterilization & packaging: After production, each unit is sealed in sterile packaging and processed through validated sterilization procedures. Final packing is completed in a controlled cleanroom environment, and every batch is supported by relevant documentation covering sterility assurance, biological safety, and package integrity.
  • Quality control & batch release: As an experienced Syringe And Needle Producer, we apply quality checks throughout production rather than relying only on final inspection. Control measures typically cover leakage performance, plunger force consistency, needle penetration characteristics, sterility verification, endotoxin control, package seal strength, and visual examination. Products are released for shipment only after the batch has met all defined quality requirements.

Customization & Market Differentiation

As a Syringe And Needle Producer, we offer custom options:

  • Different gauge/length combinations to suit customer requirements.
  • Low dead space designs to reduce residual fluid in the hub (important in precision dosing contexts).
  • Color coding or hub coding for easy selection.
  • Safety features such as retractable needle or safety shield designs (though these must be validated and compliant as a medical device variant).
  • Alternative packaging formats (tray, blister, multi-packs) to match client logistics.

As Medical Needle Suppliers, we also offer separate needle lines for customers who already have syringe platforms, supplying only the needle cartridges or hubs.

As a Syringe And Needle Producer and Medical Needle Suppliers, our factory integrates needle fabrication, syringe molding, assembly, sterilization, and rigorous quality assurance to deliver safe, reliable single-use devices. The combination of precise engineering, clean manufacturing practice, and strong quality systems enables us to meet customer specifications and regulatory requirements in the competitive medical device arena.