Abstract: A resin composition includes resin and inorganic filler. The resin includes liquid rubber resin, polyphenylene ether resin, and a crosslinking agent. Compared to a total of 100 parts by mass of the resin, the usage amount of the inorganic filler is at least greater than or equal to 40 parts by mass.

Abstract: A powder composition includes a first powder, a second powder, and a modified functional group. A particle size range of the first powder is between 1 micron and 100 microns. The second powder and the modified functional group are modified on the first powder. A particle size range of the second powder is between 10 nanometers and 1 micron. A manufacturing method of a powder composition is also provided.

Abstract: A rubber resin material with high dielectric constant and a metal substrate with high dielectric constant are provided. The rubber resin material with high dielectric constant includes a rubber resin composition with high dielectric constant and inorganic fillers. The rubber resin composition with high dielectric constant includes: 40 wt % to 70 wt % of a liquid rubber, 10 wt % to 30 wt % of a polyphenylene ether resin, and 20 wt % to 40 wt % of a crosslinker. A molecular weight of the liquid rubber ranges from 800 g/mol to 6000 g/mol. A dielectric constant of the rubber resin material with high dielectric constant is higher than or equal to 2.0.

Abstract: The present invention relates to a lock and a key for the same, and multiple modular lock core units are mounted in the lock. Multiple lock bead units having specific standard are mounted in each lock core unit. Each lock bead unit is detachable and is able to rearrange the permutations of the lock bead units. The key includes a handle, a core bar and multiple unlocking blocks. The core bar is connected with the handle. The unlocking blocks are detachable, are mounted around the core bar and have multiple lock teeth sequentially formed around the inner peripheries of the unlocking blocks. A user can adjust the permutations of the key teeth of the key to unlock the lock that has different permutations of the lock bead units, also can change the permutations of the lock core units to get the same effects.

Abstract: A combination of a lock and a key includes a cylinder having a housing, multiple index rings and multiple cores. The housing has slot laterally defined through the wall thereof the housing. At least one first post and at least one second post respectively extend radially from the first end and the second end of the housing. The index rings are located in the housing and each have at least one column with a first mark. At least one cap restricts the index rings to the housing. Each index ring has one core received therein. The key has a handle, a shaft and multiple unlocking members mounted to the shaft. Each unlocking members has a second mark and a top portion. The index rings are removed and re-arranged by removing the cap via the slot so as to obtain different combinations by the first and second marks.

Abstract: The present invention relates to a lock and a key for the same, and multiple modular lock core units are mounted in the lock. Multiple lock bead units having specific standard are mounted in each lock core unit. Each lock bead unit is detachable and is able to rearrange the permutations of the lock bead units. The key includes a handle, a core bar and multiple unlocking blocks. The core bar is connected with the handle. The unlocking blocks are detachable, are mounted around the core bar and have multiple lock teeth sequentially formed around the inner peripheries of the unlocking blocks. A user can adjust the permutations of the key teeth of the key to unlock the lock that has different permutations of the lock bead units, also can change the permutations of the lock core units to get the same effects.

Abstract: A mechanical-combination door lock has a housing assembly, a lever assembly, a disable mechanism and a combination mechanism. The housing assembly is adapted to securely mount on a door. The lever assembly is mounted though the housing assembly and has a lock body, a lock bolt, an outer lever, an inner lever, a lock core, a lock rod and a linking gear wheel. The disable mechanism is mounted in the housing assembly above the lever assembly and has a retaining ring, a resetting resilient element and a turning rod. The combination mechanism is mounted in the housing assembly and has a pintle, multiple sleeves and multiple wheels. The mechanical-combination door lock has mechanical-combination detection and resetting functions and is allowed to be temporarily disabled while the door is open.