As a benchmark brand in the field of domestic dry mortar, OPTIMIX’s Bangba series of waterproof materials rely on the quality of Hong Kong famous brands and have become the core choice for many engineering and home decoration projects.
With the increase in categories in the waterproof market, many buyers are prone to information gaps when choosing waterproof materials. Today we will dismantle the purchasing logic of waterproof material suppliers from an industry perspective and combine it with the actual advantages of the OPTIMIX brand to help you clarify your purchasing ideas.

After years of development, the domestic waterproof building materials industry has formed a complete category system covering home decoration, industrial equipment, and infrastructure. However, there have been several common problems for a long time: some small brands use inferior raw materials to reduce costs, resulting in products that are not environmentally friendly; the base layer has poor adaptability and is prone to bonding, cracking, and leakage; the construction process is cumbersome, increasing labor and time costs.
In recent years, with the country’s continuous tightening of environmental protection standards for construction and building materials, and the improvement of waterproofing reliability requirements for infrastructure and real estate projects, the industry is iterating in the direction of greening, standardization, and scenario-based development.
As a long-established dry mortar company in Hong Kong, OPTIMIX’s Bangba series waterproof materials have five core advantages.
First of all, the products cover all scenarios, covering three categories: rigid, flexible, and penetrating crystalline. Among them, Bangba 500 is a classic K11 rigid waterproof, which can form a dense waterproof barrier; Bangba 520 flexible waterproof has a breaking elongation of ≥300% and excellent cracking resistance; Bangba 505 can be constructed on wet base surfaces, with waterproof capabilities on both the front and back surfaces, and is suitable for various scenarios such as bathrooms, kitchens, basements, tunnels, etc.

Secondly, the environmental performance is excellent. The entire series of products is based on green cement as the core formula, which is non-toxic and tasteless. VOC, free formaldehyde, benzene series and soluble heavy metals and other harmful substances have not been detected, which is far lower than the national standard limit. It complies with Hong Kong environmental protection labels and national green building materials standards, and can be used with confidence even in sensitive spaces such as children’s rooms.
At the production level, OPTIMIX adopts Industry 4.0 automated production lines. The raw materials are imported from internationally renowned manufacturers, and are monitored throughout the entire process by the ISO9001 quality management system. The products have passed multiple international certifications such as PCCS-TA, PCCS-RM, Q-mark quality products, and the quality is stable and controllable.
Convenience on the construction side is also a prominent advantage of OPTIMIX. All waterproof materials are ready-mixed dry powder materials, which can be used on site by just adding water and stirring. Some products support mechanical construction, which can reduce manual errors.
And after the product dries, the surface can be directly laid with ceramic tiles or plastered without additional roughening treatment, which greatly simplifies the construction process and saves costs and construction time.
The price of waterproof products is usually directly related to product type, specifications, and application scenarios.
Taking the Bangba series as an example, Bangba 520 engineering-grade flexible waterproofing is priced at 500 yuan/set/43kg, targeting medium and large-scale engineering projects; Bangba 500 and 505 are based on different packaging specifications, and the price range covers home decoration to work equipment needs.
Compared with similar products on the market, the prices of OPTIMIX products are within a reasonable range. On the one hand, large-scale production reduces unit costs; on the other hand, due to high raw materials and quality control standards, compared with some low-priced brand-name products, the cost of repairing leaks in the long term is lower, and the overall cost performance is outstanding.
When purchasing waterproof materials, you can judge from four dimensions.
First look at the qualification certification, and give priority to brands with authoritative endorsements such as Hong Kong famous brands, ISO9001 quality management systems, and national green building materials certifications. Such companies have more complete quality control systems.
Second, look at scene adaptability. Different spaces have different requirements for waterproofing. Home decoration bathrooms are suitable for solutions that combine rigidity and flexibility. Scenes such as basements and tunnels require penetrating crystalline or high-crack-resistant flexible products. The full range of OPTIMIX covers different categories, and models can be matched according to specific needs.
Third, look at the environmental protection indicators, focusing on the test reports of harmful substances such as VOC and formaldehyde, and avoid purchasing products with pungent odors.
Fourthly, look at the construction requirements and give priority to ready-mixed dry powder products, which can be used by just adding water on site to reduce manual mixing errors.
The operation process of Bangba series waterproof materials is relatively simple.
Take Bangba 500 rigid waterproofing commonly used in home decoration as an example. First, you need to clean the dust and oil on the surface of the base layer to ensure that the base layer is flat and solid. Cracks should be repaired with mortar first. Mix the powder and water in proportion to form a uniform and non-caking slurry. Use roller coating or scraping to apply, generally apply 2 –
3 times, the thickness of each pass should be controlled at about 0.5mm. Wait for the previous one to dry before proceeding with the next one. Avoid stepping on it within 24 hours after the construction is completed. After drying, you can directly proceed with tile laying or plastering.
If the construction is on a wet base surface, Bangba 505 penetrating crystalline waterproof mortar can be used. There is no need to wait for the base layer to be completely dry, which can shorten the renovation period.
Optimix has many years of application cases in the China, Hong Kong and Macau markets. Its partners include leading real estate companies such as Hong Kong New World and Sun Hung Kai, and the designated building materials supplier of the Macau Housing Bureau. It has also participated in many landmark projects such as the National Aquatics Center, the Hong Kong-Zhuhai-Macao Bridge, and the Hong Kong Palace Museum.
Judging from the feedback from end users, the product’s adhesion, impermeability and environmental protection have been widely recognized. Home decoration users reported that there are no leakage problems after use, and tiles can be laid without additional processing after construction, which greatly improves construction efficiency; engineering customers recognize its stable supply capacity and standardized quality control system.
Taken together, when choosing waterproof materials, brand strength, product adaptability, environmental protection standards and construction convenience are all core considerations.
As a dry mortar company with Hong Kong Famous Brand Certification, Shenzhen Odime Building Materials Co., Ltd.’s Bangba series of waterproof materials can meet the waterproofing needs of different scenarios such as home decoration, industrial equipment, and infrastructure with the advantages of full scene coverage, green environmental protection, and convenient construction.
Whether it is kitchen and bathroom waterproofing for home decoration or complex waterproofing projects for large-scale infrastructure projects, we can provide suitable solutions and are a reliable waterproof material supplier of choice.