+86-18936085316 / +86-512-62524550
Home / FAQ

Here are answers to frequently asked questions.


  • Q Can I get a sample?

    A Yes, of course. We offer free sample for a small amount of products, but freight collected. You are welcomed to contact us for more details.
  • Q If we need technical support, can you offer us?

    A Sure, we have an experienced engineer team offering our customs with additional benefits with specific advice, which is based on clients’ special request, such as formula, painting, packing, etc. 
  • Q What should we do if your product can not run well?

    A Give us a detailed report including pictures onsite and products pictures. Then analyze the reason. Try to find a good way to solve the problem. If it’s our problem and not possible to solve, then we will give replacement.
  • Q How is your quality?

    A We have a very strict control system and 100% QC inspection before shipment.
  • Q Cutting materials: General Purpose?

    A For cutting a wide variety of stone, brick, block, masonry, concrete materials. 
  • Q The largest size of laser saw blade which you can do?

    A 1800mm diameter used in wall saw cutting reinforced concrete, segments thickness is 4.8mm or 5mm.
  • Q Difference between a laser and silver-brazed blade?

    1) Different technology.
    2) In stone industry(cutting marble, granite, sandstone, etc.): There is no obviously different. As in stone industry. Cutting burden is not great, and has well water coolant.
    3) In construction industry (concrete, reinforced concrete, asphalt, etc.): It's mainly used in laser welded. The welding strength is enough to prevent excessive heat. 
  • Q Payment term?

    A Payment terms: T/T or LC or West Union.
  • Q Minimum Order and Delivery?

    Minimum order: negotiable.
    Delivery: 15 to 45 days. Based on the quantity per order.
  • Q Shipping Methods?

    Air Freight when gross weight is above 45kg and less than 500kg. Fast delivery
    Sea Freight when the gross weight is above 100kg. Cheaper freight charge.
    Courier (TNT, DHL, FedEx, Ups, etc). Small try order, door to door service.
Since 2000 year, our company Johnson Tools Manufactory Co.,Ltd started to manufacture and export diamond tools for stone working and construction industry for worldwide countries.



 : +86-512-62524550
  :  +86-18936085316
 :  Tuqiao Industrial Park, Jiangning District, Nanjing, Jiangsu, China
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