) How can I choose the most suitable machine ?Please tell us what kind of work you would like the machine to do ?  Jewelry or metal?  What is the welding thickness? 2) If some problems happen to this machine, what should I do? We provide a full TWO-year machine warranty. If machine has any question exclude man-made damage ,we can send you new parts for free within warranty period. If over the warranty, we still provide excellent service. 3) Give me reasons to chose your company ?   Professional factory with competitive price;  High quality control and perfect service: All of our machine are adopted top quality parts → Test machine work well for 3 days before delivery→sent working video and all items photos base on the order list to buyer to check → buyer check everything is included and satisfied →Professional plywood package to avoid damage→shipping machine. Supply technical support all life time for our machine;We have professional after-sale service team to supply technical support to our clients for free. You can talk with them at any time if you need.  Strict implementation of after-sales warranty.