· PLAPRO and WINPRO - Selection of Work-Learning Parallel Learning Enterprises

· WINPRO - Confirmation of SMEs

· PLAPRO - Confirmation of SMEs

· LEOCHEM - Confirmation of SMEs

· WINPRO - Confirmation of venture business

· PLAPRO - KS Product Certificate

· PLAPRO - Capital increase

· PLAPRO - KS Product Certificate

· LEOCHEM - Technology Innovation Business (Inno-Biz) issuance of confirmation

· WINPRO - Establishment of an affiliated research institute

· PLAPRO - ISO 9001:2015

· LEOCHEM - ISO 14001:2015 and ISO 9001:2015

· LEOCHEM - Management Innovation Business (Main-Biz) issuance of confirmation

· LEOCHEM - Confirmation of SMEs

· WINPRO - Issuance of confirmation of start-up company

· Win the Ministerial Award of the Ministry of SMEs and Startups

· PLAPRO - Capital increase

· WINPRO - ISO 9001:2015

· LEOCHEM - KS Product Certificate

· WINPRO - Issuance of confirmation from a company specializing in materials, parts, and equipment

· PLAPRO - Confirmation of SMEs

· LEOCHEM - Issuance of confirmation from a company specializing in materials, parts, and equipment

· LEOCHEM - Cooperative firm agreement with LX hausys Corp.

· PLAPRO - Issuance of confirmation from a company specializing in materials, parts, and equipment

· WINPRO - Relocation of the headquarters and expansion of facilities in Eumseong

· PLAPRO - Confirmation of venture business

· LEOCHEM - Confirmation of venture business

· LEOCHEM - PVC stabilizers and compound automation facility system operation

· LEOCHEM and PLAPRO - Relocation of the headquarters and expansion of facilities in Chungju

· PLAPRO - KS Product Certificate

· WINPRO - KS Product Certificate

· WINPRO - Cooperative firm agreement with Hyundai L&C Corp.

· WINPRO - Plant lease and production operation in Cheongju

· WINPRO - Purchase the factory in Eumseong

· Establishment of WINPRO Co., Ltd.,

· PLAPRO - Plant lease and production line expansion in Cheongju

· LEOCHEM - Cooperative firm agreement about PVC Stabilizer with KCC Corp.

· LEOCHEM - Technology Innovation Business (Inno-Biz) issuance of confirmation

· PLAPRO - ISO 9001:2015

· LEOCHEM - ISO 14001:2015 and ISO 9001:2015

· PLAPRO - Capital increase

· PLAPRO - Capital increase

· PLAPRO - Cooperative firm agreement with SM Namsun Aluminum Corp.

· Apply for a patent [Powder-type PVC stabilizer manufacturing device]

· PLAPRO - Establishment of an affiliated research institute

· Apply for a patent [Powder-type PVC stabilizer manufacturing device]

· PLAPRO - Cooperative firm agreement with Hyundai L&C Corp.

· PLAPRO - Cooperative firm agreement with KCC Corp.

· PLAPRO - Expansion of PVC extrusion facilities

· EOCHEM - Expansion of PVC stabilizer and compound facilities

· Establishment of GLOBAL LEOCHEM Co., Ltd.,

· PLAPRO - PVC extrusion line production facility complete and production operation

· LEOCHEM and PLAPRO - Relocation of the headquarters in Jincheon

· Establishment of PLAPRO Co., Ltd.,

· LEOCHEM - Relocation of factories and expansion of facilities in Jincheon

· LEOCHEM - Introduction of PVC stabilizers and compound automation facilities

· LEOCHEM - Establishment of an affiliated research institute

· LEOCHEM - Separation of non-toxic stabilizer production facilities

· LEOCHEM - Relocation of factories and expansion of facilities in Eumseong

· Cooperative firm agreement with SM Namsun Aluminum Corp.

· LEOCHEM - Securing production facilities for toxic and non-toxic stabilizers

· LEOCHEM - Introduction of non-toxic PVC stabilizer production facilities

· LEOCHEM - Introduction of Pellet Type PVC Stabilizer Production Facility

· LEOCHEM - Cooperative firm agreement with KCC Corp.

· Conversion to a LEOCHEM corporation

· LEOCHEM - Cooperative firm agreement with Hanwha L&C Corp.

· Establishment of Leochem