You can apply as long as it is theoretically feasible. In other words, any ordinary technician can create and copy the invention according to the contents of the patent application documents. The invention is practical, meets the requirements of openness and sufficiency, and can apply for a patent. If you apply for a patent, you'd better find a formal agency to do it, because the patent application documents are legal documents, so the requirements are high, and non-professionals may not write well. If you still don't understand, add me QQ 12 1849468.
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