40 Sawing of materials, namely, cutting of metal; sawing of materials, namely, cutting of metal on CNC lathe; sawing of materials, namely, cutting of a wide range of precision machined metal parts to order or specification of others in the fields of cabling, wiring, construction, scientific apparatus and instruments, nautical apparatus and instruments, surveying apparatus and instruments, photographic apparatus and instruments, optical apparatus and instruments, optical goods, measuring apparatus and instruments, signaling apparatus and instruments, checking or monitoring apparatus and instruments, image recording, transmission or reproduction apparatus, sound recording, transmission or reproduction apparatus, medical apparatus and instruments, dental apparatus and instruments, veterinary apparatus and instruments, surgical apparatus and instruments, orthopedic articles, prostheses, artificial implants, special furniture for medical or dental use, vehicles, apparatus for locomotion by land, apparatus for locomotion by air, apparatus for locomotion by sea, jewelry, timepieces and chronometric instruments, watches, watch bands, watch chains, watch springs, key rings, boxes of precious metal, works of art of precious metal, art; custom printing services; custom three dimensional printing (3DP) services for others; custom three dimensional printing (3DP) services for others of parts made in plastic; providing information relating to the treatment of materials; soldering; burnishing by abrasion; material treatment services, namely, planning of materials; grinding; galvanizing; gilding services; tin plating; dyeing services; air purification; treatment of materials by vulcanization; production of energy; silkscreen printing; waste treatment (transformation); sorting of waste and recyclable raw material (transformation); recycling of trash and waste