About Us

TLHM-Your best partner
TLHM has a proud history of lockset manufacturing since founded in 1954. With over 60 years of experience we have developed a world-class comprehensive research and development department specializing in the engineering of quality door locksets.
Our focus is to continue to provide our customers with high-quality products, professional services and we are committed to be a proactive and innovative manufacturer.
We have become the primary choice for ODM / OEM service providers in the global door lock market. Our products are exported to more than 10 countries worldwide; including USA, Canada, Australia, New Zealand and Korea.
We will continue to keep growing with our partners to create added value and benefits – TLHM is your best partner.
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Product Development
TLHM has a sophisticated team who hold more than 60 years-experience in developing and designing ANSI grade commercial door locks for Cylindrical, Tubular, Deadbolt and Mortise products.

Our product development is not only driven by customers’ requirements, but also integrates our product design and research capabilities to achieve market leadership. We also own in-house mold designs and manufacturing capabilities to ensure precision and quality of casts and prototypes.
Quality Control & Assurance
TLHM has a commitment to provide customers with reliable quality products. Whether the product is mechanical or electronic locks, both are passed through stringent testing, being both ANSI and UL 3-hour fire rating certified. Certifications are regularly renewed, ensuring our products are ongoing compliant with the latest ANSI standards.

As for in-house quality control, TLHM has strict processes in place for quality inspection from material incoming to cargo outgoing. We also audit all suppliers on a regular basis.

Our testing laboratory has been certified and authorized by the ITS Professional Testing Organization. This has ensured we have in-house state-of-the-art equipment for conducting various testing on our products to maintain consistency of product quality.
Finish testing machines
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Cycle testing machines
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Measuring machines
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Manufacturing Capability
TLHM has an extensive range of stamping, cutting, polishing, coating and deep drawing machines, as well as cylinder making and assembling machines to satisfy all requirements. This allows us to manufacture different types of door locks and at competitive costs.

In addition, Progressive die stamping machines are used to maximize manufacturing efficiency and accurate consistency.

We have invested in machine automation, which accelerates the production line, increasing manufacturing efficiency and reducing labor time between workshops.
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Transferring Machines
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cylinder assembling automation
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Heavy Duty Stamping Machine
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Automatic Polishing Machine
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Stamping Machine