About Ching Mei Optics

Ching Mei Optics established in 1993, is a leading global manufacturer of sapphire crystal and mineral glass.

“CHING MEI” in Chinese literally means “The Beauty of Sapphire Crystal”.  Founded by Mr. Lam, with a passion for developing sapphire crystal and a pursuit of perfection, CM Optics has steadily risen in the industry over the past 30 years. Accumulating experience in sapphire processing and gaining the trust and support of customers, CM Optics has established a strong market position and a good reputation.
Our sapphire crystal products are not only supplied to the global traditional watch market but are also widely used in various optical products, including smart watches, camera lenses, mobile phone touchscreens, phone accessories, medical and aesthetic instruments. We are committed to exploring more possibilities for using sapphire in different products.
CM Optics is headquartered in Hong Kong, and we have a large self-built research and production base in Dongguan, equipped with the most advanced production technology in the industry, the most accurate testing equipment, and the strictest quality control system.


Innovation is the key to success
Quality is the foundation of continuous development
Customer satisfaction is the goal we constantly pursue


Excellence and the pursuit of perfection
Customer-oriented, creating a win-win situation
Exploring innovation, always striving for victory


Establish win-win partnerships with customers
Provide employees with a good workplace
Support environmental protection for the society
Continuously improve company’s the production technology


Company Establishment

Ching Mei Optics was founded in Hong Kong and production factory in Shenzhen

Expanding Production Lines

Expanded sapphire production lines, screen printing production lines, and optical coating production lines

Introduction of Optical Product Production Lines

The Optical Cold Processing Research Department focused on developing new techniques and products

Active in the Hong Kong Watch Industry

 Became a member of the Hong Kong Watch Manufacturers Association, actively participating in association activities

First Participation in the Hong Kong Watch Fair

Directly exchanged industry information with buyers from around the world

ISO9001 Qualified

The Quality Management System Certification ensured our products meet customer requirements and that internal processes and management are capable of continuous improvement

Factory Relocation to Dongguan

Self-built a large industrial park in Dongguan, expanding production scale and introducing optical dust-free production environment

Participation in the Swiss Basel Watch Fair

 Customer base expanded to major traditional watch brands in Europe

Introduction of Optical-Grade Coating Technology

 Significantly improved the optical performance, durability, and protection of watch lenses

Introduction of Automated Production Equipment

Increased overall production efficiency and reduced costs and reliance on manpower

Investment in Precision Machining Technology

Collaborated with top Swiss brands to use laser equipment to process sapphire components

Introduction of Automated Inspection Equipment

Improved high-precision accuracy in product size and appearance inspections, fully supported quality control through data analysis

Further Investment in Automated Production Lines

Shortened production cycles for sampling, trial production, and mass production

Participation in the Guangdong-Hong Kong-Macao Greening Project

Promoting ecological conservation and sustainable development through cross-regional cooperation

Participation in the Clean Production Partnership Program

 Reducing environmental pollution and resource waste, creating a green environment and contributing to environmental protection

Disney Approved

Qualified as a supplier through Disney’s rigorous assessment and audition process

ISO14001 Qualified

 The Environmental Management System Certification ensured we achieved international standards in environmental management.

SA8000 Qualified

 Social Responsibility Management System Certification ensured we protect labor rights, improving working conditions, and caring for employee safety and health

Upgraded Optical Coating Equipment

Greatly improved light transmittance, anti-reflection, abrasion resistance, scratch resistance, and performance in extreme environmental testing

Further Upgraded Automated Equipment

Improved overall production and inspection accuracy, efficiency, and quality control

30th Anniversary

 Ching Mei Optics commits to continuing to provide customers with high-quality sapphire products, working together for mutual development and creating the next milestone

Corporate Responsibility

ISO9001 Quality Management

ISO 9001 is a set of international quality management standards aimed at establishing an effective quality management system for businesses to meet customer requirements and local regulatory demands. By establishing and adhering to the ISO 9001 quality management system, companies can clearly define quality standards for products and services, ensuring consistency and stability and thereby enhancing the level of quality.

ISO14001 Environmental Management

ISO 14001 is an international standard that helps businesses establish an environmental management system, aimed at effectively managing and reducing the impact of businesses on the environment. This standard emphasizes environmental sustainability and compliance, and it can help businesses better consider environmental factors in their operational processes, reduce resource waste, and minimize negative impacts on ecosystems.

SA8000 Social Responsibility

SA8000 is a social responsibility standard aimed at helping businesses establish and maintain labor conditions that align with ethical and human rights values. It focuses on issues such as employee rights, working conditions, wages, and working hours, to ensure that organizations respect human rights, promote fair and sustainable labor conditions in their operational processes.

Expertise Skill

Sapphire Growth

CM Optics has strict quality inspection procedures for raw materials to ensure that sapphire materials meet purity and hardness requirements

Optical Coating

CM Optics collaborates with university professors to develop various optical coatings applied to sapphire lenses, including hard coatings that enhance surface hardness and various colored anti-reflective coatings that increase light transmittance

Silk Screen Printing

Our mature silk screen printing technique allows customers to choose different PANTONE® colors to print their own brand logo on the surface of the sapphire, or to print luminous effects on the watch bezel.

Precision Machining

Process sapphire with high precision, including laser cutting technology that achieves various complex shapes and polishing techniques that make the sapphire surface smooth

Reliability Testing

We conduct multiple reliability tests on optical coatings, including abrasion resistance testing, salt spray testing, and artificial sweat testing

Automated Optical Inspection

More accurate dimension measurement and visual inspection, achieving data-driven quality control and analysis, improving overall production efficiency, and reducing the impact of human factors on quality


Sapphire Watch Crystals

Based on your watch design, CM Optics produces sapphire crystals with different styles and shapes

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30th Anniversary

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