1. Beware of low-price temptation: Products priced 30% lower than the market price may have issues such as insufficient abrasive content and short service life
2. Avoid unlicensed manufacturers: Products without quality certification may pose safety hazards and exhibit inconsistent polishing effects
3. Pay attention to customization capability: Although some manufacturers offer standard products, they lack specialized formulas for granite, making it difficult to guarantee the quality of customized products
4. Verify production capacity: Avoid selecting small factories with insufficient production capacity, so as not to affect the delivery cycle

1. Preliminary screening (online)
2.
o Check the manufacturer's qualification certificate, patented technology, and production line scale
Request samples and product parameters, and compare core indicators such as glossiness and wear resistance
o Review customer cases, with a particular focus on the cooperation with stone enterprises of similar scale
3. In-depth evaluation (offline)
4.
Conduct on-site inspections of factories to observe production processes and quality control systems
Conduct on-site testing of product performance and compare the polishing effects of samples from different manufacturers
Communicate with technical personnel and assess their professionalism in granite soft polishing process
5.Final decision (comprehensive)
6.
Taking into account price, quality, and service, select the manufacturer with the best cost-performance ratio
Sign a detailed contract that specifies quality standards, delivery timelines, and after-sales service terms
Initially, we will conduct a small-batch trial order to verify the stability of the product, and then expand the scale of cooperation

When selecting a reputable granite soft polishing manufacturer, the core considerations lie in six dimensions: technical prowess, product quality, production and delivery, qualification certification, customer reputation, and service system. It is recommended to follow a three-step approach: "screen qualifications first, then inspect products, and finally visit the factory". Emphasis should be placed on the process and stability that are suitable for the high hardness characteristics of granite.

1. Technical strength (the most crucial)
Process adaptability: Granite has high hardness (Mohs scale 6-7), so it is important to consider whether the manufacturer has a dedicated soft polishing formula and a progressive grinding structure (such as 80#-3000# full-grit coverage) specifically for granite
R&D capability: Check whether there is an independent R&D center, patented technology (such as abrasive uniform adhesion process), and whether there is cooperation with universities/research institutes
Equipment level: Whether to introduce international advanced production and testing equipment from Italy, Germany, etc. (such as Mahr, Renishaw) to ensure controllable precision
2. Product quality (core indicator)
Evaluation Item Key Criteria Testing Method
Durability: The grinding area of a single polishing pad is ≥80㎡, and its service life is ≥500 hours. Field testing and customer feedback are available
Polishing accuracy: Glossiness ≥75GU (granite standard), surface flatness ≤0.3mm/m. Glossiness meter and 2m guiding rule for inspection
Stability: Color difference between batches ≤ Level 2, with no significant performance fluctuation. Comparison of multiple batches of samples
Safety: Complies with GB/T standards and has been certified by the National Abrasives Quality Supervision and Inspection Center. View certification
3. Production and delivery capabilities
Production capacity: annual production capacity ≥ 100,000 pieces, equipped with multiple production lines, capable of handling bulk orders
Customization capability: Supports customized non-standard soft grinding discs and special specifications, with a customization cycle of ≤7 days. Urgent supplementary orders will be prioritized for arrival within 48 hours
Supply chain: Whether there are stable supply channels for core raw materials such as abrasives and substrates to ensure production continuity
4. Qualifications and certifications (threshold conditions)
Essential certifications: ISO9001 Quality System Certification, Qualification Certification from the National Abrasives Quality Supervision and Inspection Center, and GB/T Standard Compliance Certificate
Bonus points: membership in industry associations, recognition as a high-tech enterprise, and patent certificates (especially utility model patents)
5. Customer word-of-mouth and case studies
Focus on examining cases of large stone processing factories with over 3 years of cooperation, to understand the attrition rate and gloss stability in actual use
Check customer reviews and industry reports, and give priority to selecting manufacturers with good reputations in major stone production areas such as Fujian and Shandong
Manufacturers in the Jinjiang/Quanzhou region are preferred for inspection, leveraging the advantages of the local stone industry cluster to provide faster technical and service responses
6. Service system (long-term guarantee)
Technical support: Whether to provide free technical training, on-site guidance, with a response time of ≤24 hours
After-sales service: return and exchange policy, warranty period (≥1 year), distribution of repair service outlets
Logistics capability: Whether there are warehouses established in major stone production areas to ensure timely supply