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(Click for frequent words.) 63 PT Pindad 61 SIRIM QAS International 61 Boustead Naval Shipyard 60 PSC Naval Dockyard 59 Pindad 57 Megamas Training Company 57 Deftech 57 Insas 55 Maju Holdings 55 Scomi Engineering 55 Technologies Kinetics 55 Tamco Corporate 55 Gurun Kedah 55 Edaran 55 ST Kinetics 55 FNSS 54 Alam Maritim Resources 54 Measat Satellite Systems 54 M# grenade launchers [001] 54 Pembinaan 54 Melewar Industrial Group 54 Satang Jaya 54 Malaysia Sdn Bhd. 54 Holdings Sdn Bhd 54 Mitrajaya 54 Motors Sdn Bhd 54 towed howitzers 53 MISC Bhd. 53 Hicom 53 M# grenade launcher [001] 53 M# grenade launcher [002] 53 Tracoma 53 PT Inti 53 JNPC 53 MiTV Corporation 53 EPMB 52 Boustead Heavy Industries 52 Sendirian Berhad 52 Armalite rifles 52 rocket launchers mortars 52 MEASAT Satellite Systems 52 Microturbo 52 antitank weapons 52 Uzi sub 52 TRC Synergy 52 Syntium 52 mTouche Technology Bhd 51 Boon Koon 51 Kalashnikov submachine guns 51 #.#mm ammunition 51 #.#mm rifle 51 ordnance factory 51 Su #MK# 51 self propelled Howitzers 51 spareparts 51 Roketsan 51 SapuraAcergy 51 ANG Auto 51 PT Dirgantara Indonesia 51 sub machineguns 51 PT Petrokimia Gresik 50 eBworx 50 Mainboard listed 50 Laser Guided Bombs 50 Ultimax 50 AK# rifles 50 Malaysia Smelting Corporation 50 mortars rocket launchers 50 DK Leather 50 PT Utama 50 BrahMos missiles 50 Perunding 50 #mm Howitzer 50 Mems Technology 50 Steyr rifles 50 Soltam 50 EDO MBM Technology 50 Norinco 50 cashew nut processing 50 Tata Daewoo 50 M9 pistols 50 Pasifik 50 batching plants 50 Darul Ehsan 50 Scientex 49 Korindo 49 ARDE 49 Hüper Optik 49 Soltam Systems 49 Yantai Raffles Shipyard 49 catridges 49 Lekir Bulk Terminal 49 PT Nusantara 49 Swiber Offshore 49 Glock pistols 49 Iran Khodro Diesel 49 Oerlikon Contraves 49 locating radars 49 Actros trucks 49 Kongsberg Gruppen 49 Peremba 49 Kongsberg Defence & 49 MOWAG 49 Tunguska M1 49 AIM 9X Sidewinder 49 IJM Corp Bhd 49 Scomi Precision Engineering 49 Etika 48 Syarikat Prasarana Negara Berhad 48 Minimi 48 MTrans 48 Salcon Engineering 48 POIC Sabah 48 Insas rifles 48 Berjaya Corp Bhd 48 #MK 48 Naim Cendera 48 countrymade 48 shunter locomotives 48 MKEK 48 Metaltech 48 Fotronics 48 parangs 48 Scomi Engineering Bhd 48 Guidance Kit PGK 48 Industri 48 Holdings Sdn Bhd. 48 Rocket Propelled Grenade RPG 48 Sumatec 48 indigenously manufactured 48 Carbine rifle 48 KHTP 48 Aselsan 48 Kencana Petroleum 48 replaceable assemblies 48 Fiocchi Ammunition USA 48 Patimas 48 Airod Sdn Bhd 48 Lumut Perak 47 Su #MKIs 47 ELTA Systems 47 M.Mobile 47 automatic grenade launcher 47 CfBT Education Services 47 manufactured indigenously 47 Mecar 47 Sunflag 47 automatic rifles grenades 47 9mm caliber 47 MSC Cyberport 47 Intraco 47 Alam Maritim 47 washing machine timers 47 MMHE 47 Oto Melara 47 Shenyang Aircraft Corp. 47 Mabuchi Motor 47 Navayuga Engineering 47 Holdings Pte Ltd 47 Engineering Works KSEW 47 PT Sinar 47 Su #MKI fighters 47 exporter Rosoboronexport 47 armored wheeled 47 Agni Prithvi 47 Landas Utama 47 ASELSAN 47 Colt AR 47 recoilless 47 DRB Hicom Bhd 47 INSAS rifles 47 Su #MKM 47 Rocket launchers 47 Nadicorp 47 solar photovoltaic PV module 47 Brunei Methanol Company 47 Wah cantonment 47 Umarex USA 47 SIA Engineering 47 NLAW 47 Kompakar 47 gunny bags containing 47 Zecon 47 Mk# [001] 47 Hongdu 47 Infratech 47 Howitzer guns 47 HeiTech 47 Grenade launcher 47 NORINCO 47 Airod 47 Sanyang Industry 47 9mm ammunition 47 Comintel 47 subsidiary Jurong Shipyard 46 G3 rifles 46 automatic rifles pistols 46 C#A# 46 Ranhill Power 46 activist Wajdi 46 UEM Builders Bhd 46 Pembinaan Sdn Bhd 46 Welwyn Components 46 M#A# [002] 46 rifles revolvers 46 IFVs 46 Petronas Carigali Sdn Bhd 46 Keppel Offshore 46 rifles carbines 46 Samudera Shipping Line 46 Launcher UBGL 46 baby armalite 46 Taneja Aerospace 46 Transmark 46 Dong Feng Motors 46 ammonium nitrates 46 Saab Bofors Dynamics 46 Bina Puri Holdings 46 automatic rifles rocket launchers 46 assorted ammunitions 46 submachine 46 Bank Kerjasama Rakyat 46 Vertical Launching Systems 46 MBRL 46 Hektar 46 self propelled howitzer 46 Syntech 46 expended cartridges 46 CUFL jetty 46 M#A# Paladin 46 RAP4 T# 46 Suva wharf 46 bags Rs #cr 46 khukuris 46 Jaya Sdn Bhd 46 Shenyang Aircraft 46 Hamriya Free Zone 46 KADDB 46 Ordnance Factory 46 naphtha kerosene 46 EH# helicopter 46 FFE Minerals 46 muzzle velocities 46 PT Pratama 46 Steyr AUG 46 Sukhoi fighter planes 46 Bushmaster rifles 46 Wijaya Karya 46 AK# assault rifles 46 #mm howitzers 46 ITO Joint Venture 46 Perbadanan 46 C2SAT 46 R5 rifles 46 Taliban commander Shyster 46 PKM machine guns 46 Shakti Pumps 46 Harpoon Block II 46 Rocket launcher 46 M# Armalite rifle 46 Bushmaster armored 46 Speco 46 Otokar 46 caliber semiautomatic 45 DRB HICOM Bhd 45 ductile iron pipes 45 Export Processing 45 vials ampoules 45 jt venture 45 VEAM 45 Formis 45 Viet Nam Shipbuilding 45 AW Jenkinson 45 corrugated carton 45 rifle carbine 45 KBP Tula 45 Lahad Datu Sabah 45 towed howitzer 45 Systec 45 LPG naphtha 45 Ramunia Fabricators Sdn Bhd 45 AN/TPQ-# 45 Alvis Vickers 45 AmanahRaya 45 Eversendai 45 Aardvark Tactical Inc. 45 Cebarco WCT 45 Schwing Stetter 45 Al Aqeelah 45 smokeless gunpowder 45 antitank missiles 45 SapuraCrest Petroleum Bhd 45 Saudi Binladin 45 AES Transpower 45 EC# helicopters 45 Global Vectra Helicorp 45 M2 .# caliber 45 Ankleshwar Gujarat 45 Panoli 45 Akash missiles 45 Chase Perdana 45 countrymade pistols 45 Steyr 45 Hai Ha 45 Doosan DST 45 9mm pistols 45 Kalyani Brakes 45 IED jammers 45 Cubinet Interactive s 45 Dhruv helicopters 45 inks MOU 45 #.#mm caliber 45 pistols revolvers shotguns 45 contraband ganja 45 formulator manufacturer 45 Customs seizes 45 Steyr Mannlicher 45 revolvers pistols 45 MIMOS 45 stealth frigate 45 Setia Tropika 45 millimeter mortar 45 Heron unmanned aerial 45 Gamuda Bhd. 45 millimeter pistols 45 M3M 45 Havelsan 45 Valuemart 45 Sdn Bhd BSP 45 Cambata Aviation 45 CROWS II 45 M4 Carbine 45 Modular Lightweight Load 45 Pte Ltd Singapore 45 Mine Protected Vehicles 45 Rocket Propelled Grenades 45 countrymade revolver 45 DRB Hicom Bhd. 45 Phalanx Close 44 MAFI 44 Mahindra Navistar Automotives 44 carbine rifles 44 Beretta handguns 44 NBI seizes 44 amphibious armored 44 rice husking 44 Beretta pistols 44 #mm Howitzers 44 caliber Ruger 44 SapuraCrest Petroleum 44 Light Machine Gun 44 Yaba tablets 44 Smerch multiple 44 Kornet E 44 Harpoon missile 44 compressors generators 44 Reinforcing Steel 44 AEGIS destroyers 44 Bumi Armada 44 Sankyu 44 S #B Seahawk 44 SKS assault rifles 44 M#A# Abrams Tank 44 Perwaja Steel Sdn Bhd 44 Alif Technologies 44 Bhushan Steels 44 Metali 44 M# assault rifles 44 Tuwairqi 44 BCorp 44 ammunitions 44 RPG boosters 44 Light Machine Guns 44 Talbros 44 Dataprep 44 M#B 44 grenades automatic rifles 44 KarenSoft 44 OPET 44 Afcons Infrastructure 44 Iskandar Muda 44 GPMG 44 Denel Saab Aerostructures DSA 44 HG Metal 44 trinitrotoluene TNT 44 LPG bottling 44 mm Howitzers 44 Denel Dynamics 44 uncustomed 44 metamphetamine hydrochloride 44 VMZ 44 RCWS 44 antitank guided 44 M# launcher 44 rocket launchers grenades 44 Abu Sahid 44 INSAS rifle 44 M# howitzer 44 RQ #B Raven 44 Amghara scrapyard 44 TDCV 44 Kockums AB 44 Aerospace Industries IAI 44 Damen Shipyards 44 rubber tyred gantry cranes 44 Global Upline 44 Viglacera 44 rocket propelled grenades RPGs 44 Hoang Thach 44 clutching Kalashnikov rifle 44 Casings 44 Jotun Powder Coatings 44 Garand rifles 44 RPG7 44 assault rifles mortars 44 gelatin rods 44 Bushmaster 44 #mm mortars [002] 44 Teknik 44 Armaris 44 PTE Ltd 44 injection moldings 44 optronic 44 single buoy mooring 44 #.#mm #.#mm [001] 44 Bharat Dynamics 44 Light Armored Vehicles 44 Hyundai Rotem 44 Hock Seng Lee 44 Salcon Bhd 44 unsaturated polyester resin 44 HeiTech Padu 44 Dacoits loot 44 Uda Holdings 44 gelatin sticks 44 Sigarms 44 Frontken 44 Nurol 44 antitank missile 44 Norinco SKS 44 Xi'an Aircraft 44 denim fabrics 44 lethod bombs 44 #mm Bushmaster 44 MPMG 44 loader cranes 44 Plexion 44 Leopard #A# 43 uniforms brandishing Kalashnikov 43 Air Combat Maneuvering 43 System VLS 43 WCT Engineering 43 unlicenced firearms 43 unlicenced firearm 43 Pinaka 43 Bistari 43 housebreaking implements 43 Nam Fatt 43 Rahimafrooz 43 diffusion furnaces 43 Bombardier #MP 43 Lum Chang 43 Enraf 43 polyolefin resins 43 .9 mm pistol 43 Prahari 43 Surpac Minex Group 43 Cyberview Sdn Bhd 43 Campro engine 43 HHV Solar 43 Dynamatic 43 Gelatine sticks 43 SKS rifles 43 axle assemblies 43 Chuan Hup 43 Saab Gripen fighter 43 Galdakao near 43 AMSC wholly owned 43 #.#mm pistol 43 Rheinmetall AG RHM GY 43 mortar fuses 43 NPK fertilizer 43 Kalashnikov assault 43 Pentamaster 43 Bofors AB 43 Intertrade 43 F #P frigate 43 M# rifles 43 Mono Ethylene Glycol 43 Norinco pistol 43 SBBL gun 43 Keppel Fels 43 FOTON 43 Shagai 43 PVC Pipes 43 Sinwa 43 JATCO 43 BelAZ 43 Innocon 43 Industries IMI 43 Rolls Royce Turbomeca 43 DPMS 43 Dhawde 43 Antitank 43 readymix concrete 43 Terberg 43 Ammunitions 43 Marubeni Itochu Steel 43 Ferrovial Agroman 43 ALHs 43 Greatship Global 43 #mm shells 43 mm mortar shells 43 Armoured Recovery 43 Goldcredit International Trading 43 Autron 43 Euromobil 43 TKC Steel 43 Cougar Mastiff 43 mortar rounds rocket propelled 43 .9 mm 43 M4 assault rifles 43 Mazagon Dock Ltd 43 Kerafed 43 Under Barrel Grenade 43 Malayan Banking Berhad 43 PT Sarana 43 Ruag 43 JCB excavator 43 rifles SLRs 43 Limited BEML 43 Loncin 43 rifles 43 Tadiran Spectralink 43 hydraulic excavators wheel loaders 43 Hornbill Skyways 43 Assault rifles 43 Portek 43 Polytex 43 #mm howitzer 43 Hotgate 43 BEML Ltd 43 Mazagaon Dock 43 Ural Steel 43 ADNOC Distribution 43 Toyota Tsusho Corporation 43 Ferromatik Milacron 43 shotguns pistols 43 .# revolvers 43 Picatinny Arsenal NJ 43 polypropylene compounds 43 PTE LTD 43 ATGMs 43 Jatco 43 Tactical Systems 43 SHTP 43 M# #mm 43 reach stackers 43 polybutylene terephthalate 43 Berjaya Land Bhd 43 Magnum handgun 43 Sojitz Corp 43 Keppel Offshore & 43 Malaysia Smelting 43 AK# assault 43 mm grenade launcher 43 AMTEC 43 Inland Container Depot 43 #mm mortars [001] 43 Armoured Vehicles 43 Murata Machinery 43 ZPMC 43 wheeled armored vehicles 43 assault riffle 43 Fuzing 43 Naza TTDI 43 Powermax 43 muzzleloader rifles 43 RG# MRAP 43 Ordnance Factories 43 Unmanned Aerial Vehicle UAV 43 Nghi Son refinery 43 #.#x#mm [002] 43 Elecon 43 Alliant Techsystems Inc 43 rockets launchers 43 Scomi 43 SIG Sauer 43 rifles rocket launchers 43 Macmahon Holdings Limited 43 Keppel FELS Ltd. 43 MP5 submachine gun 43 Datuk Len Talif 43 Transporter HET 43 appliqué armor 42 9mm submachine gun 42 telescopic handlers 42 Hiap 42 Dauphin N3 42 Grenade launchers 42 Limited BDL 42 Jiangling Tractor Company 42 Kinetic Motors 42 Hino trucks 42 ballistic helmets 42 Attackers hurled 42 Autech 42 GEO Monitor IPO Newsflash 42 Grottaglie Italy 42 9 millimeter pistol 42 Magnecomp International 42 sten gun 42 SEPL 42 #mm mortar 42 Vizag Steel Plant 42 Knighthawk helicopters armed 42 Aravali Power 42 Demag Plastics Group 42 BEB Erdgas und 42 Unitex 42 horizontal machining center 42 foundry alloy 42 LSAW pipes 42 lethod 42 mm projectiles 42 TSML 42 Multi Purpose Machine Gun 42 KONGSBERG 42 Infotek 42 FZC 42 Loadstar 42 antitank rockets 42 Intratec 42 Mugoya Estates 42 HVF 42 Daelim 42 FPSO hull 42 airfreight forwarders 42 Aichi Steel 42 guns grenade launchers 42 freight forwarding warehousing 42 Coselle TM 42 Scorpene submarine 42 Omni Directional Technology 42 countrymade liquor 42 assault rifles grenades 42 Sumitomo Bakelite 42 PTY Ltd. 42 Tenix Defence 42 SembCorp Utilities 42 Smerch 42 Dockwise Shipping 42 styrene butadiene rubber 42 PetroRig 42 Keltec 42 MK# [001] 42 Donggi Senoro LNG 42 quay crane 42 Starstreak 42 #mm rockets 42 handguns rifles shotguns 42 HPCL Mittal Energy 42 carpets handicrafts 42 Diehl BGT Defence 42 artilleries 42 Startech Hydrogen 42 loaded semiautomatic handguns 42 Vehicle ASV 42 M# Armored Knight 42 inertial navigation systems 42 RPG 7s 42 Avitronics 42 grenades grenade launchers 42 indigenously produced 42 RABS 42 Nippon Yusen Kaisha NYK 42 Air Force RSAF 42 injection molding presses 42 Borhat 42 Shekhadi coast 42 handgrenades 42 rifles pistols grenades 42 Ital Thai 42 PUNSUP 42 fiberglass reinforced plastics 42 System Replacement LVSR 42 armor piercing rocket propelled 42 Swiber Holdings 42 jaw crushers 42 Karlskoga Sweden 42 mm carbine 42 Orisoft 42 MKK 42 Roadtec 42 ACJs 42 Beckons Industries 42 Protech 42 Balakote 42 Luxfer 42 caliber semiautomatic pistol 42 Airwork 42 Krauss Maffei Wegmann KMW 42 Khong Guan 42 Impex 42 Ascon 42 Bushmaster Firearms 42 PGU 42 Nulka 42 Hyosung Motors 42 .# caliber revolvers 42 Irkut Corporation 42 HC restrains 42 GPZ 42 SEEPZ 42 BLACK HAWK helicopters 42 selective laser sintering 42 AW# helicopter 42 Unidentified miscreants 42 NH# NFH 42 Phalanx Block 1B 42 Cabadbaran Agusan del Norte 42 resins adhesives 42 Paveway 42 Sea Skua 42 telecommunication equipments 42 acrylonitrile butadiene styrene ABS 42 fuzes 42 Five seveN 42 Satair 42 lube blending 42 ammonia methanol 42 M9 pistol 42 Ordnance Factory Board 42 possessing dagga 42 Armoured Personnel Carriers 42 Huntsman Polyurethanes 42 antitank mines 42 supercritical boilers 42 paddy husk 42 Rangae district 42 M# grenade launchers [002] 42 barangay Basak 42 Kirloskar Brothers Ltd 42 XAC 42 IMC Shipping 42 RAK Minerals 42 Optronic 42 unsafely stored 42 reachstackers 42 Lufthansa Technik Philippines 42 spiral welded 42 pistols rifles shotguns 42 M#A# [003] 42 rifles handguns 42 Aerated Concrete 42 cal .# 42 Technoplast 42 Alno 42 Heron UAVs 42 Simunition 42 Pantsir S1 42 OBVIO 42 Ducab HV 42 AK# [001] 42 MTHEL 42 HAFED 42 Indigenously 42 Macro Kiosk 42 wafer foundries globally 42 welding electrodes 42 Ottobrunn Germany 42 Thermal Weapon Sight 42 Telindus Surveillance Solutions 42 Galvanising 42 armor piercing incendiary 42 Sembawang Shipyard 41 Al Zarar 41 rifles pistols shotguns 41 iRobot Warrior 41 Techsphere Systems International 41 Goldhofer 41 Goldcredit International Enterprises 41 PetroVietnam Finance 41 arms ammunitions 41 Pte Ltd 41 IMPCO designs manufactures 41 Colombo Dockyard 41 Minaean Habitat India 41 assault rifles rocket launchers 41 Mk# [002] 41 Yokohama Tire Philippines 41 Janakuasa 41 PTE Ltd. 41 PGU #A B 41 rifles grenade launchers 41 Northrop Grumman Sperry 41 M#s [003] 41 Hicorp 41 SandCat 41 Teledata Informatics Ltd 41 Surbana 41 helicopter airframes 41 Erieye radar 41 Mazagon Dock 41 grenades RPGs 41 Greatship 41 Browning 9mm pistol 41 EOD robots 41 nil NOTE 41 rope hoists 41 Interfood 41 ro ro vessels 41 Limited BEL 41 Pellet guns 41 Gripen fighter 41 ignitors 41 millimeter handguns 41 Brahmos Aerospace 41 Numaligarh Refinery 41 spurious ghee 41 lightweight armoring 41 Tambun Indah 41 flexo printed 41 Supertech 41 Bina Puri 41 AK# rifle 41 HLL Lifecare 41 vessels OSV 41 PIA cad top 41 Maulana Tajuddin 41 paintball markers 41 short barreled shotguns 41 BRAHMOS 41 mine countermeasure 41 DPMS Panther Arms 41 Jeco 41 Salawa 41 nylon filament yarn 41 Iskandar Investment 41 Mirambo 41 Tat Hong 41 pornographic VCDs 41 F 5E 41 vermin compost 41 System ATACMS 41 Fused Deposition Modeling FDM 41 Tororo Cement 41 Chakan Maharashtra 41 pistols fitted 41 manu factured 41 Sonardyne 41 Gulfstream GIV 41 Bushmaster XM# 41 Detonators 41 M2HB 41 FNH USA 41 Hawk AJTs 41 multimission helicopter 41 topsides modules 41 rifles shotguns pistols 41 Fabrique Nationale 41 manufacture 41 Ausco Modular 41 Changi Airports International 41 armalite rifles 41 Oleg Demchenko 41 CVRDE 41 dimethyl ether DME 41 Jurong Technologies 41 EP Barrus 41 antiaircraft artillery 41 Aisin AW 41 CNG autorickshaws 41 wholesellers 41 KIK 41 OPVs 41 Volga Dnepr Airlines 41 Ircon International 41 9mm pistol 41 millimeter mortar rounds 41 avionic components 41 Kongsi 41 machineguns 41 PSDC 41 i2i Enterprise 41 Steyr Daimler Puch 41 Atlet 41 mortar tubes 41 Dagang Net 41 Huanyu 41 unmanned drone laden 41 unfired rounds 41 Neogel 41 M#/M# Bradley 41 Nextnation 41 countrymade pistol 41 Rietschle Thomas 41 thermoplastic biocomposite compounds 41 telescopic booms 41 inks MoU 41 recoilless rifle rounds 41 Conveyor Systems 41 IRKUT 41 Dragunov sniper rifle 41 lorries transporting 41 SELEX Sistemi Integrati 41 Huge cache 41 Mk5E 41 Lak Sathosa 41 vetronics 41 OKP Holdings 41 raided hideout 41 Munition 41 Lilama 41 palletized load 41 AMDB 41 Mediaman 41 Mydata 41 semiautomatic carbine 41 Hawker de Havilland 41 Izhmash 41 BAE Systems Bofors 41 oleo chemicals 41 firearm silencer 41 RJ#s 41 Gerakan Masyarakat Lingkungan Hidup 41 Sunkar 41 Electronic Warfare EW 41 Stamina Rx 41 boga 41 artillery projectiles 41 TT pistols 41 Toyo Engineering 41 hydraulic breakers 41 SCAR Heavy 41 FH# B# 41 Air Launched Decoy 41 Bina Darulaman 41 M#A# [005] 41 flash suppressor 41 Sarawak Hidro 41 Synthetic rubber 41 caliber sniper rifle 41 M# howitzers 41 rifles pistols 41 RelQ Software 41 Innotec 41 BT Fuze 41 .# caliber Ruger [002] 41 Danzas AEI Emirates 41 Lamkhai 41 VRL Logistics 41 REVA Electric Car 41 sub machinegun 41 indigenously designed 41 M1 carbine 41 liquefied gases 41 Elastogran 41 Ambush Protected MRAP 41 Ruger Mini 41 Brahmos supersonic cruise 41 wife Rheema 41 #KVA [002] 41 Nolato 41 #.#MT [001] 41 Weapon Locating Radars 41 Helmet Mounted Display 41 recoilless rifles 41 Carl Zeiss Optronics 41 sliding headstock 41 Keppel Singmarine 41 Cubinet Interactive 41 Brahmos cruise missile 41 Indústria 41 Perimekar 41 indigenously built 41 Dolojan 41 grenades rocket launchers 41 Phaik 41 Fuda Faucet 41 Exeed 41 artillery mortars 41 Systems GDLS 41 SupplyCore Middle East 41 Mahindra Intertrade 41 Hsiungfeng 2E 41 Minister Welgama 41 Vyborg Shipyard 41 automatic pistols 41 Keppel Shipyard 41 Air Force RMAF 41 WJ Towell 41 Intertec 41 Sahaviriya 41 Pusnes 41 GRP pipes 41 URAL 41 Padaeng 41 methylene diphenyl diisocyanate