The stone cutting machine is a compulsory certification product stipulated by the National Certification and Accreditation Administration. Therefore, when purchasing, you should first check whether the product has the 3C mark. The method of inspection is generally whether there is any on the outer packaging of the tool or on the nameplate of the tool. 3C mark, if there is still doubt about this (because the manufacturer of the power tool has not passed the annual supervision review, the National Certification and Accreditation Administration suspended or revoked its certificate), you can go to the website of the CNCA to check whether the 3C certificate of the tool is currently in effect.
According to the needs of users, first distinguish between family use and professional use, because most of the electric tools are designed for professionals, so before choosing and purchasing, we should first distinguish between professional and general family shellfish. Usually, the power of professional tools is different from that of general household tools. The power of professional tools is larger to facilitate professionals to reduce their workload. The input power of general household tools is not very large because of the small engineering and relatively small workload.
Observe the outer packaging of the stone cutting machine. The outer packaging should have a clear pattern and no damage. Open the packaging box to observe the appearance of the stone cutting machine. The color should be uniform. There should be no obvious shadows and dents on the surface of the plastic parts. There should be no scratches or bumps. The assembly misalignment between the outer casing parts is ≤0.5mm. The aluminum castings are smooth and beautiful without defects, and the surface of the whole machine should be free of oil and stains. When holding by hand, the user feels better and the handle of the switch should be flat. The length of the cable should generally be no less than 2 meters.
Check the nameplate and instructions of the stone cutting machine. The nameplate parameters should be the same as those on the 3C certificate. The manufacturer's and manufacturer's detailed address and contact details should be available on the instruction manual. The serial number of the product traceable should be on the nameplate or certificate.
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