In the food processing industry in Hong Kong, a clean production environment is the core mandatory threshold for enterprises to obtain food production licenses, pass on-site inspections by the Department of Health, and connect with Hong Kong, Macao, and international supermarket channels. The core processes of food ingredient mixing, material forming, and product packaging have extremely strict control requirements for suspended particles, planktonic bacteria, settling bacteria, temperature and humidity, and spatial pressure difference in the air. Once the process layout of the clean room is unreasonable, the sealing of the enclosure structure is poor, and the operation of the purification air conditioning system is unstable, it is easy to cause cross contamination of food ingredients and excessive microbial content in finished products, which directly leads to factory inspection failure and the inability of products to be marketed and circulated. Many investors preparing for clean factories in Hong Kong and Macau will conduct multiple searches when selecting construction service providersRecommended reliable dust-free workshop decoration companies in ChinaRanking, carefully compareTop 10 Brands of Cleanroom Construction in Purification Engineering CompaniesCross border project implementation cases of shortlisted enterprises, sorted out one by onePrecautions for Choosing a Company for Purification Engineering DecorationThe focus is on examining whether the enterprise is familiar with the local food GMP regulations in Hong Kong, whether it has experience in overseas project construction, and whether it can fully cooperate with third-party testing and official verification, in order to minimize risks such as rework, project delays, and acceptance jamming.
1、 Project Overview and Customer Profile
The owner of this projectHuashang Kangsheng Co., LtdThe registered and production base is located in Hong Kong, China. It is a modern food manufacturing enterprise in Hong Kong that focuses on the research and development, production, packaging, import and export sales of health and leisure food, pre packaged food, and herbal dietary food. The company relies on the supply chain advantages of the Guangdong Hong Kong Macao Greater Bay Area, focusing on a series of products such as Hong Kong style specialty snacks, ready to eat nutritious meals, herbal extract solid drinks, gift box packaged pre made foods, etc. Its sales network covers local supermarkets, pharmacies, convenience stores in Hong Kong, while also radiating overseas markets in Macau and Southeast Asia. As the brand market continues to expand, the functional zoning of the original simple production site is chaotic, lacking a systematic dust prevention, antibacterial, and clean control system, which cannot meet the food production standards of the Hong Kong Department of Health and international factory inspection standards for overseas customers. To strengthen the product quality control system and expand import and export trade channels, Huashang Kangsheng has launched a new standardized food clean room upgrade construction, entrusting Huajian Jing to be fully responsible for the entire setClean room, cleanroomThe purification project provides one-stop general contracting services from preliminary survey, planar process layout, HVAC purification system design, enclosure structure decoration, equipment installation and commissioning, third-party cleanliness testing to GMP compliance guidance, striving to create a modern food clean production workshop that meets Hong Kong PIC/S GMP standards.
2、 GMP standardized flow and logistics scientific layout design
The core control focus of food cleanroom lies inSeparation of clean and dirty water, one-way flow, and prevention of cross contaminationThis project strictly follows the GMP audit rules for Hong Kong and Macau food, independently planning two sets of fully physically isolated personnel access routes and material processing routes, with irreversible one-way flow throughout the entire process. Multiple levels of buffer air locks are set up to form pressure barriers, cutting off the path of pollutants entering the clean production area from the source.
1. Complete personnel purification (flow of people) route
Changing shoes→ One more→ Er Geng→ Buffer→ Clean corridor→ Each production workshopThe staff first change their specialized clean work shoes in the external shoe changing area when entering the clean area. They then go through the first level changing room to remove personal clothing, the second level changing room to wear one-piece clean clothes, masks, gloves, and hair caps. Afterwards, they enter the enclosed buffer room to complete air shower dust removal and hand disinfection. They enter the public clean corridor through the negative pressure airlock door and are then divided into different functional clean areas such as the ingredient workshop, molding workshop, inner packaging workshop, and inspection room. Interlocking buffer doors are installed in areas of different cleanliness levels, relying on gradient pressure differences to prevent the backflow of polluted outdoor air, which fully complies with the purification management standards for personnel in Hong Kong and Macau food cleanrooms.
2. Complete material processing (logistics) route
Unpacking room→ Buffer sterilization room→ Preprocessing→ Mixed→ Forming→ Internal package→ Outsourcing→ Finished Goods WarehouseAll external packaging raw materials shall be uniformly removed from the external carton, wrapping film and other external packaging in the unclean unpacking room, and then sent to the buffer sterilization room for surface ultraviolet or ozone disinfection and sterilization treatment to eliminate the dust, eggs and microorganisms carried by the external packaging; The raw materials after disinfection and sterilization enter the pre-treatment workshop for sorting, cleaning, crushing, extraction and other rough processing processes; Afterwards, it is transferred to the ingredient mixing workshop for proportioning and mixing, and then transported to the molding workshop to complete the shaping processes such as tablet pressing, filling, and granulation; The semi-finished products are transferred to the 10000 level clean packaging area for vacuum sealing and independent sealing packaging; After the internal packaging is completed, it is transported to the general outsourcing area for labeling, packing, and packaging, and finally stored in the temperature controlled finished product storage area. The entire logistics flow line is completely separated from the pedestrian flow channel, completely avoiding secondary pollution caused by packaging materials and raw material packaging to the core clean production area, and laying a solid hardware foundation for subsequent on-site inspections by the Hong Kong Department of Health.
3、 Core construction configuration and system advantages of the project
（1） Material selection for enclosure structure (universal high durability combination scheme for food workshops)
Considering the high temperature, high humidity, and rainy marine climate environment in Hong Kong, the enclosure structure of this project adopts the classic combination of industry food purification engineering:Rock wool color steel plate for wall partitions, glass magnesium board as the main material for suspended ceilings, food grade anti-static PVC flooringThe wall partition is made of fire-retardant rock wool purification color steel plate, the fire rating is up to standard, the sound insulation and heat insulation can be made, and the joints can be sealed seamlessly in circular arc, without dust accumulation dead corner, and the food grade disinfectant can be resistant to repeated wiping disinfection and sterilization; The ceiling adopts high-strength glass magnesium purification board, which is moisture-proof, anti sagging, and has strong structural bearing capacity. It can stably mount a large number of equipment such as high-efficiency air supply outlets, purification lighting, fire sprinklers, ventilation ducts, etc., and is suitable for long-term use in Hong Kong's humid environment without deformation; The overall ground is covered with anti slip and anti-static PVC roll flooring, which is waterproof, anti-seepage, easy to clean, and releases static electricity to avoid dust adsorption and accumulation. All wall corners and ground corners are rounded to eliminate hygiene blind spots and reduce the probability of mold growth, fully meeting the requirementsClean room, cleanroomLong term clean operation and maintenance requirements.
（2） Configuration and operational value of purification air conditioning system
The entire air purification circulation system of this project adopts mature and stableDirect expansion purification air conditioning unit+ceiling high-efficiency air supply outletCombination mode is also the mainstream purification solution with the highest usage rate in cross-border food and health product cleanrooms. The air is filtered through a direct expansion unit for primary and medium efficiency, achieving multifunctional integrated processing of refrigeration, heating, dehumidification, and humidification. It is transported to the HEPA high-efficiency air supply outlet at the top of each workshop through a closed air duct for ultimate filtration, with a filtration efficiency of up to 99.97% for 0.3-m dust particles, effectively intercepting bacteria, spores, and suspended particles in the air. This system does not require the construction of cooling towers, chiller rooms, or complex water circulation pipelines, greatly saving the scarce civil engineering space in Hong Kong. The units can be started and stopped independently in different zones, with lower energy consumption and faster response time for temperature and humidity control. It can stably lock the temperature in the clean area at 18-26 ℃ and control the humidity at 45% -65%, suppressing the moisture and mold growth of food raw materials; Modular and efficient air supply outlets provide uniform air supply, easy replacement of filter elements in the later stage, and low operation and maintenance costs, making them very suitable for compact construction scenarios with high space utilization requirements in Hong Kong factories. At the same time, the workshop is equipped with a complete set of clean ancillary facilities such as double person double hair dryer shower rooms, embedded clean transfer windows, partitioned ozone disinfection devices, pressure difference online monitoring systems, hand washing and disinfection pools, etc., to establish a complete closed-loop microbial prevention and control system.
4、 Project construction control and enterprise service strength
As a pioneer in the Guangdong Hong Kong Macao Greater Bay Area and the implementation of overseas purification projectsCleanroom decoration and purification engineering companyHuajianjing has established a special cross-border construction and technical disclosure team for this Hong Kong project, strictly implementing Hong Kong construction safety regulations, fire safety regulations, and clean room construction process standards. Key nodes such as the airtightness of color steel plate splicing, air duct leakage rate, floor anti-static grounding, and high-efficiency filter sealing are strictly controlled, and image records are kept throughout the construction process, and airtightness pressure tests are conducted in stages. After the completion of the project, 72 hours of uninterrupted full load linkage debugging will be carried out, and comprehensive third-party testing of suspended particles, temperature and humidity, static pressure difference, planktonic bacteria, and settling bacteria will be carried out in different regions, and compliance testing reports will be issued. Huashang Kangsheng will be assisted in coordinating with the Hong Kong Department of Health to complete the inspection of food production sites throughout the process.
Many companies planning to build clean workshops for food, health products, consumer goods, and health products will carefully study themPrecautions for Choosing a Company for Purification Engineering DecorationFocus on verifying the qualifications of service providers, self owned construction teams, similar industry cases, and certification coaching capabilities, with multidimensional referenceRecommended reliable dust-free workshop decoration companies in ChinaRanking, horizontal comparisonTop 10 Brands of Cleanroom Construction in Purification Engineering CompaniesThe comprehensive service capabilities of the listed companies. Huajianjing has been focusing on multiple fields such as food, medical devices, optoelectronic electronics, hygiene products, and laboratories for many yearsCleanroom, Cleanroom, Purification EngineeringEPC general contracting business, with successful delivery experience of cross-border cleanrooms in multiple locations in the Greater Bay Area and Hong Kong, familiar with multiple GMP regulatory systems both domestically and internationally.
The successful commencement of the Hong Kong Huashang Kangsheng Food Cleanroom project is an important milestone for Huajian Jing to expand its purification market in Hong Kong and Macau. The follow-up project team will strictly control safety, quality, and schedule, complete all construction deliveries with high standards and efficiency, and assist Huashang Kangsheng Co., Ltd. in building a compliant, intelligent, and long-term stable food clean production base in Hong Kong, helping the enterprise to deeply cultivate the food markets in Hong Kong, Macao, and overseas. In the future, Huajianjing will continue to leverage its advantages in cross-border purification engineering technology to provide one-stop solutions for more production enterprises in the Guangdong Hong Kong Macao Greater Bay Area and Hong Kong Macao regionsCleanroom decoration and purification engineering company全流程Solutions。
