— Professional Technology —
  • Modular Assembly
  • Painting Technology
  • Mold / Injection Technology
  • Precision Stamping
  • Modular Assembly
    Self made core components enable independent assembly, evaluation, and testing; We independently develop and produce molds, shorten production cycles, respond quickly to orders, and strictly guarantee quality.
  • Painting Technology
    Capable of automatic spraying, manual spraying, and special appearance coating, it can perform various types of surface treatments on hardware and plastic parts.
  • Mold / Injection Technology
    Focusing on fields such as digital cameras, 3C products, and car accessories, we have independent design and precision manufacturing capabilities for plastic molds and stamping molds, providing complete supporting services from mold opening to mass production.
  • Precision Stamping
    High precision dimensional control, stable form and position tolerances, high product consistency, good interchangeability, and no need for secondary processing. Exploring efficient sampling technology with high material utilization rate
— Product Introduction —
- About Grandtai -

Grandtai Optical Tech Co.,Ltd was founded in 1996 and has modern production equipment and technology, equipped with professional instruments to implement strict quality control; The company covers an area of over 21000 square meters.

With authoritative certifications such as ISO9001 quality management, ISO14001 environmental management, and IATF16949, the company has a scientific and complete quality management system. It specializes in the design and production of precision plastic molds and hardware molds, injection molding, metal stamping, painting, printing, and assembly of finished products. With many years of deep cultivation in the industry, the company has established long-term cooperative relationships with many well-known enterprises. Faced with market challenges, relying on technological strength and refined management, continuously upgrading service quality, and fully responding to diverse customer needs.


  • 1996
    Year
    Company Establishment
  • 30
    +
    Technical precipitation
  • 30
    +
    Product Application
  • 21000
    Factory Area
- Departments -
  • Mold
  • Stamping
  • Injection
  • Painting class
  • Assembly
  • QA
  • Optics
  • Mold

    Using professional software such as UG for 3D modeling and simulation analysis; Equipped with advanced equipment such as high-precision CNC, slow wire cutting, spark machine, precision grinder, etc., the machining accuracy reaches ± 0.005mm; the tolerance and hole spacing accuracy of stamped parts can be controlled within ± 0.005- ± 0.01mm, meeting the requirements of precision assembly.

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  • Stamping

    ■  Equipped with precision punching machines (5-110 tons), capable of processing material thicknesses ranging from 0.042mm to 3.0mm, with product accuracy of ± 0.01mm, bending perpendicularity of ± 0.03mm, flatness of ≤ 0.05mm, and aperture accuracy of H9.

    ■  The mold production cycle is ≤ 25 days, and the first pass rate of samples is 98%.

    ■  Supporting materials: SUS, SUYP, SPCC, SGCC/SECC, copper (nickel/gold plating), PET, etc.

    ■  Post process: Cleaning with halogen-free hydrocarbon solvents (ROHS compliant), tapping M1.0-M5.0, grinding, polishing, aluminum processing (spinning/stamping), high-temperature coating, electroplating.


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  • Injection

    ■  Equipped with imported vertical, horizontal, and two-color injection molding machines from Japan, with a clamping force of 15-230 tons, it can meet the production of all categories from micro parts to large structural parts.

    ■  Vertical machine: suitable for micro precision parts; Horizontal machine; Mass production of small structural components and complex feather roots with a thickness of 0.1mm; Two-color machine; Complex appearance parts and encapsulation molding of two materials.

    ■  We independently develop molding technology to effectively solve the problem of bright lines caused by uneven meat thickness in 3C products, and provide a comprehensive injection molding solution.


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  • Painting class

    ■  Equipped with a 10000 level cleanroom, 2 coating and 2 baking spray lines, 2 precision hand coating lines, and 48 transfer printing machines.

    ■  Proficient in various color schemes such as high gloss PU paint, high gloss UV paint, rubber paint, conductive paint, pearl white paint, etc.

    ■  Focusing on product graphics and text LOGO、 Batch printing and processing of scales and patterns.

    ■  Process types: silk screen printing (flat/curved surface, low cost, strong adhesion), transfer printing (small area/irregular surface/small characters), color in engineering (brand logo color in).

    ■  Core competencies: plate making and color matching, positioning and alignment, batch production, printing, drying and shaping, size and clarity inspection, layout customization.

    ■  Applicable products: plastic shells, hardware components, electronic product casings, etc.

    ■  Collaborative advantage: One stop matching (coating+printing integrated completion), unified color matching, precise matching of base color and printing color.


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  • Component course

    ■  Adopting Canon unit production method for operation, the work is convenient and flexible, and production switching is fast and efficient.

    ■  We specialize in the assembly, testing, and evaluation of shutters, apertures, lens components, and vehicle mounted products for digital cameras, camcorders, and DSLR cameras in a cleanroom with a 10000 level and fully electrostatic management environment.

    ■  Paired with automatic dispensing and automatic hot melting SMT、 Welding of power components, ND/glass sheet bonding and other processes to achieve integrated production and assembly.

    ■  It is capable of microscope anime measurement, high and low temperature environment evaluation, cold and hot shock test, durability test, optical detection, power component detection, FPC function detection, CCD detection, magnetic flux detection, etc.


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  • QA

    1. Obtained ISO 9001:2015 Quality Management System Certificate (CN24/00000 665).

    2. Obtained ISO 14001:2015 Environmental Management System Certificate (CN24/00000 664).

    3. Obtained IATF16949 Quality Management System Certificate.

    4. Obtain the Guangdong Province Waste Gas Discharge Registration Form and Safety Production Standardization Certificate.

    5. Certified by Canon/Nikon and other green procurement companies.

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  • Optical Department

    We have passed the IATF 16949 automotive industry quality control system certification, which is an essential gateway to enter the global automotive supply chain. This marks that we strictly adhere to the highest international quality standards in the design, production, and service of automotive optical products throughout the entire process.

    ■  Established a full chain traceability mechanism, from raw material inspection to finished product shipment, each batch of products can be quickly traced.

    ■  Implement Failure Mode Analysis (FMEA) to anticipate and mitigate over 90% of potential quality risks in advance.

    Customized service: providing one-stop customized solutions from optical design to structural optimization based on the installation space and functional requirements of different vehicle models.

    Core product: Car welcome light, perfect integration of ceremony and technology.

    ■  Personalized customization: Support customers to customize projection patterns, accurately project brand logos, model names, personalized signatures and other attributes.

    ■  Enhance brand tone: provide differentiated configurations for high-end models, enhance brand recognition and user belonging.


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