- CRK CO.,LTD.
- Fire-proof rubber,Intumescent rubber,Water swollen rubber sealant,Butyl adhesive tape,R&D for rubber compounds,Refractory material,Waterproof material.
- Address:306 Koyagimachi,
- NIHON KUTAISYORI CO.,LTD.
- RC Guardex,Waterproof material,Prevent oxidation,Waterproof Membrane,concrete waterproof,Water Proof.
- Address:2F, 2-20-30, Takanawa,
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