There are at least five different child resistant functions that could be applied to all tin size of metal packaging, for example, rectangle, square, triangle, hexagon or irregular shape could be matched well. Every tin box could be achieved to child-resistant version by CR Tin. As customized child resistant tins, Gen1 and Gen2 child resistant tins could be a classical example. Metal Candy Tin, Large Tin Can , Round Tin Containers , Metal Tin Cookies ,Metal Chocolate Box . Press & Turn is common lock for round child proof tin in the market, but CRALD7625 uses the original tinplate structure to form Turn & Lift child proof mechanism that changes the four-piece to up-bottom structure and save more the cost. The rolled inside lid and bottom forms this hidden child resistant lock with the elastic tinplate to create this stable child proof tin can. CRALD7625 applies slots and grooves lock style to consist of child proof mechanism that two slots on necking area of bottom lock the rolled inside lid that the lid could be released when two slots pass two grooves on lid. This structure would reduce the unit cost with the exquisite appearance that is new option for round child resistant tin can. As this up-bottom structure of this child proof tin can, it could be improved to airtight version easily that adding a silicone gasket on lid would be working perfectly (airtight means under water and no water in tins). the child proof lock wouldn’t be affected by silicone gasket and it could match child proof lock well. It belongs to recycling airtight child proof tin can in the market that the lighter weight, lower unit cost, good-looking, assembling easily forms this popular certified airtight child proof tin can. The product will supply to all over the world, such as Europe, America, Australia,Romania, Sri Lanka,Latvia, Juventus.The air tight condition for child resistant tin box could be divided into two versions that is CR Tin’s air tight standard and the other air tight standard. CR Tin’s airtight standard could drop tin in water without any water entering or pack water without leaking, which could keep dry and fresh for pre-rolls or gummies packaging. Two classical examples for air tight child resistant tin boxes – Gen1 and Gen2 airtight could show the airtight standard. Gen1 airtight tin consists of the tin box with metal holder and foam pad that is not fully recycling, but it’s fully air tight condition that tin box could sank water without water leaking inside. Except for packing infused items, it could be an airtight container to stock medical pills or anything. Gen2 air tight child resistant tin belongs high-end packaging in the market that all the parts belong to recycling material and the invisible child-proof lock could provide a smooth appearance. The air tight condition is formed by tin box, metal holder and silicone gasket to keep the inside space airtight. It’s CR certified and tested many time to ensure that packs water without leaking and sank it in water and the inside space is no water entering.