Teknologi Fotovoltaik dan Referensi Sumber diskusi

By | Februari 25, 2018

hanya sebagai database dan history referensi tentang Fotovoltaik karena sudah banyak pembahasan-pembahasan terkati teknologi terbarukan ini.
referensi ini diambil dari beberapa sumber salah satunya blog pak wahyu

Sebelum beranjak pada materi lainya;

Pengurus Grup diskusi pengguna solar panel dan Renewable Energi

https://www.facebook.com/groups/168319220513562/permalink/354322228579926/

Alasan memilih listrik tenaga surya.
https://www.facebook.com/groups/168319220513562/permalink/322877545057728/

Yang harus disiapkan bagi PEMULA
https://www.facebook.com/groups/168319220513562/permalink/325299704815512/

Merk-merk PV rekomendasi apa saja.
https://www.facebook.com/groups/168319220513562/permalink/349244702421012/

Merk-merk INVERTER REKOMENDASI
https://m.facebook.com/groups/168319220513562?view=permalink&id=373475249997957

Menghitung kebutuhan daya listrikk rumah.
https://m.facebook.com/groups/168319220513562?view=permalink&id=293082404703909

Tips meninggalkan system PV saat mudik
https://www.facebook.com/groups/168319220513562/permalink/328017831210366/

Daftar seller solar panel rekomendasi
https://m.facebook.com/groups/168319220513562?view=permalink&id=331809407497875

Maintenance system Photovoltaik seperti apa?!
https://m.facebook.com/groups/168319220513562?view=permalink&id=341511433194339

Gambaran klaim solar panel ke produsen
https://www.facebook.com/groups/168319220513562/permalink/355867305092085/

Biaya PLN vs PLTS
https://www.facebook.com/groups/168319220513562/permalink/368281423850673/

1. PHOTOVOLTAIK

Tips memilih PHOTOVOLTAIK
https://www.facebook.com/groups/168319220513562/permalink/287386348606848/

A. Cara kerja Gried tie with limiter
https://www.facebook.com/groups/168319220513562/permalink/316880562324093/
B. Trial Tracker by timer
https://www.facebook.com/groups/168319220513562/permalink/297124837632999/
C. Watercooling for PV
https://www.facebook.com/groups/168319220513562/permalink/294637701215046/
D. Aplikasi PV rekomendasi
https://www.facebook.com/groups/168319220513562/permalink/293082404703909/
https://www.facebook.com/groups/168319220513562/permalink/290826141596202/
E. Dioda by pass
https://m.facebook.com/groups/168319220513562?view=permalink&id=277056232973193
F. Trial tracker ke 4
https://m.facebook.com/groups/168319220513562?view=permalink&id=275068899838593
G. Review watercooling system
https://m.facebook.com/groups/168319220513562?view=permalink&id=294350224577127
H. PHOTOVOLTAIK
https://www.facebook.com/groups/168319220513562/permalink/287386348606848/
I. Solar cell palsu BENARKAH?
https://www.facebook.com/groups/168319220513562/permalink/321307455214737/
J. Tipe – tipe solar panel
https://m.facebook.com/groups/168319220513562?view=permalink&id=321503615195121
K. Tips memparalel – seri photovoltaik
https://www.facebook.com/groups/168319220513562/permalink/339986430013506/
L. Sudut kemiringan PV
https://www.facebook.com/groups/168319220513562/permalink/343017899710359/
M. PV tier 1 terkena cacat
https://www.facebook.com/groups/168319220513562/permalink/347275985951217/
N. Koefisien suhu pada Pv
https://www.facebook.com/groups/168319220513562/permalink/352081498803999/
O. Penyebab PV produksi nya hancur
https://www.facebook.com/groups/168319220513562/permalink/352419775436838/
P. Performansi solar panel ditinjau darimana?
https://m.facebook.com/groups/168319220513562?view=permalink&id=352869568725192
Q. Tracker by timer 2
https://m.facebook.com/groups/168319220513562?view=permalink&id=353540975324718
R. Reflektor Pv
https://m.facebook.com/groups/168319220513562?view=permalink&id=279553552723461

2. INVERTER

Tips memilih inverter yg baik
https://m.facebook.com/groups/168319220513562?view=permalink&id=288969595115190

A. Inverter murah made in cina
https://m.facebook.com/groups/168319220513562?view=permalink&id=310108406334642
B. Off grid rasa hybrid.
https://m.facebook.com/groups/168319220513562?view=permalink&id=285121342166682
C. On grid tanpa butuh PLN
https://m.facebook.com/groups/168319220513562?view=permalink&id=276499833028833
D. Dc Coupling atau AC Coupling pilihan terbaik
https://www.facebook.com/groups/168319220513562/permalink/321819808496835/
E. AC Battery System & Hybrid Inverter system
https://www.facebook.com/groups/168319220513562/permalink/322582625087220/
F. Tips memilih inverter yg baik
https://m.facebook.com/groups/168319220513562?view=permalink&id=288969595115190
G. Kenapa output Inverter negative mengeluarkan strum
https://www.facebook.com/groups/168319220513562/permalink/371524953526320/

3. BATTERY

Tips memilih Battery yg baik
https://m.facebook.com/groups/168319220513562?view=permalink&id=326784354667047

A. Supercapasitor combinasi with battery
https://www.facebook.com/groups/168319220513562/permalink/300908180587998/
B. Apa kapasitor bank berguna
https://www.facebook.com/groups/168319220513562/permalink/300532960625520/
C. 4 Battery diparalel balanced
https://www.facebook.com/groups/168319220513562/permalink/299897457355737/
D. Tester Battery
https://www.facebook.com/groups/168319220513562/permalink/297825827562900/
E. What is deep cycle battery
https://www.facebook.com/groups/168319220513562/permalink/295319591146857/
F. Fakta battery telecom
https://www.facebook.com/groups/168319220513562/permalink/294472897898193/
G. DOD telecom battery
https://www.facebook.com/groups/168319220513562/permalink/294133661265450/
H. Life cycle vs temperatur battery lead acid
https://www.facebook.com/groups/168319220513562/permalink/292861358059347/
I. Lead acid bisa lebih dari 4 tahun logiskah
https://www.facebook.com/groups/168319220513562/permalink/292107604801389/
J. Biaya beli lifepo4 vs lifetime
https://www.facebook.com/groups/168319220513562/permalink/291812381497578/
K. Lead acid favorit battery
https://www.facebook.com/groups/168319220513562/permalink/291744634837686/
L. 3 best pilihan battery
https://www.facebook.com/groups/168319220513562/permalink/291025238242959/
M. Supercapasitor teori
https://m.facebook.com/groups/168319220513562?view=permalink&id=269912753687541
N. Battery komponen termahal dalam plts
https://m.facebook.com/groups/168319220513562?view=permalink&id=276927019652781
O. Review setelah pke NOS battery
https://m.facebook.com/groups/168319220513562?view=permalink&id=286225418722941
P. Lithium tak perlu bms
https://m.facebook.com/groups/168319220513562?view=permalink&id=284897418855741
Q. Perdebatan NS
https://m.facebook.com/groups/168319220513562?view=permalink&id=298239214188228
R. Battery ups bukan deep cycle
https://www.facebook.com/groups/168319220513562/permalink/306323250046491/
S. Maintenance aki plat tipis
https://www.facebook.com/groups/168319220513562/permalink/303756680303148/
T. Apa itu Gel Battery dan AGM Battery
https://www.facebook.com/groups/168319220513562/permalink/323263708352445/
U. Bartery 18650 untuk PowerWalls
https://www.facebook.com/groups/168319220513562/permalink/323499094995573/
X. Seni merakit battery lithium menjadi PowerWalls langkah-langkah nya
https://www.facebook.com/groups/168319220513562/permalink/323804228298393/

A. Kapasitor 150.000mf joss
https://www.facebook.com/groups/168319220513562/permalink/325676568111159/
B. Iseng -iseng treatment Aki dg Edta + Aquades
https://www.facebook.com/groups/168319220513562/permalink/323058195039663/
C. Nuclear Battery
https://m.facebook.com/groups/168319220513562?view=permalink&id=330831384262344
D. Test Bledoosinnn lithium 18650
https://www.facebook.com/groups/168319220513562/permalink/328552221156927/
E. Tips memilih aki bekas/janda
https://m.facebook.com/groups/168319220513562?view=permalink&id=353774098634739
F. DOD battery
https://www.facebook.com/groups/168319220513562/permalink/354675058544643/
G. Hitungan battery dengan PV
https://www.facebook.com/groups/168319220513562/permalink/354904211855061/
H. C-RATE Battery dan pengaruh nya
https://m.facebook.com/groups/168319220513562?view=permalink&id=354279241917558
I. Pengaruh CCA terhadap performa
https://m.facebook.com/groups/168319220513562?view=permalink&id=361147817897367
J. Internal Resistensi dan kaitannya dg performa
https://m.facebook.com/groups/168319220513562?view=permalink&id=357069521638530
K. Battery vs ongrid
https://m.facebook.com/groups/168319220513562?view=permalink&id=371817796830369
L. Perlukah ground pada battery
https://m.facebook.com/groups/168319220513562?view=permalink&id=372054110140071
M. Paralel aki beda AH apa boleh?
https://www.facebook.com/groups/168319220513562/permalink/374558726556276/
N. Battery dikombinasikan dg Kapasitor
https://www.facebook.com/groups/168319220513562/permalink/377451892933626/

Mahalnya sebuah battery dalam system PLTS menjadi point penting pagi pecinta listrik Surya untuk bisa memakai nya dalam durasi yg lama, lalu apa saja kita-kiat yg harus diperhatikan, berikut ini flashback diskusi tentang battery yg bisa disimak ulang. salam joss, siapkan segelas kopi untuk menemani.

1. Tips menjaga keawetan battery.
https://www.facebook.com/groups/168319220513562/permalink/276927019652781/
2. CCA dan pengaruhnya.
https://www.facebook.com/groups/168319220513562/permalink/278256879519795/
3. Agar battery bertahan sampai 5 tahunan
https://www.facebook.com/groups/168319220513562/permalink/277743399571143/
4. Cara menseri dan paralel battery yang baik.
https://www.facebook.com/groups/168319220513562/permalink/278607316151418/
5. Study perbandingan aki paralel dan aki seri, lebih kuat mana.
https://www.facebook.com/groups/168319220513562/permalink/278739326138217/
6. Tentang 3 Noss battery . Kapasitor, balancer, desulfator
https://www.facebook.com/groups/168319220513562/permalink/280692592609557/

4. KABEL & SAFETY

A. Kabel PV1F
https://www.facebook.com/groups/168319220513562/permalink/316060949072721/
B. Fuse break point
https://www.facebook.com/groups/168319220513562/permalink/311709862841163/
C. Plts terbakar
https://www.facebook.com/groups/168319220513562/permalink/294175741261242/
D. Pv rawan terkena petir
https://www.facebook.com/groups/168319220513562/permalink/293068561371960/
E. Grounding pentingkah dipasang
https://m.facebook.com/groups/168319220513562?view=permalink&id=286086008736882
F. Voltage protector
https://m.facebook.com/groups/168319220513562?view=permalink&id=282982909047192
G. Review tentang surger aresters, mcb dan fuse
https://m.facebook.com/groups/168319220513562?view=permalink&id=282917865720363
H. Pentingnya MCB DC
https://m.facebook.com/groups/168319220513562?view=permalink&id=285717265440423
I. Diameter kabel PV1F
https://m.facebook.com/groups/168319220513562?view=permalink&id=347542775924538
J. Wiring safety device
https://m.facebook.com/groups/168319220513562?view=permalink&id=368591707152978
K. Tips menyambung kabel
https://m.facebook.com/groups/168319220513562?view=permalink&id=374094346602714

Mahalnya peralatan PV system, maka sebuah kekonyolan kecerobohan jika system yg sudah ada dirumahmu tidak dibekali dg 3 alat proteksi yg harus segera dipasang.

Berikut link ulasan tentang 3 alat itu yaitu surge protector DC, fuse DC serta MCB DC.
Sebaiknya dibaca sebentar sebelum mengomentari agar paham apa yg sudah kita ulas :

1. Surge Arester DC
https://www.facebook.com/groups/168319220513562/permalink/282579935754156/
2. Fuse DC
https://www.facebook.com/groups/168319220513562/permalink/282194979125985/
3. MCB DC
https://www.facebook.com/groups/168319220513562/permalink/281760559169427/
4. Dioda Blocking.
https://www.facebook.com/groups/168319220513562/permalink/281642979181185/
Hal yg perlu diperhatikan dalam instalasi listrik dirumah adalah warna kabel, sepele tapi berandil besar.
5. Warna kabel
https://www.facebook.com/groups/168319220513562/permalink/282382349107248/

4. SOLAR CONTROLLER

Tips memilih solar controller yg baik
https://m.facebook.com/groups/168319220513562?view=permalink&id=286996515312498

A. PowMr mppt
https://m.facebook.com/groups/168319220513562?view=permalink&id=315280649150751
B. MSB mppt
https://m.facebook.com/groups/168319220513562?view=permalink&id=298416314170518
C. PWM rasa Mppt bisa
https://m.facebook.com/groups/168319220513562?view=permalink&id=287527261926090
D. mppt atau PWm yg terbaik
https://m.facebook.com/groups/168319220513562?view=permalink&id=288583445153805
E. PWM dengan kabel gede
https://m.facebook.com/groups/168319220513562?view=permalink&id=315696379109178
F. Mppt terfavorit
https://m.facebook.com/groups/168319220513562?view=permalink&id=298392487506234
G. MSB review
https://www.facebook.com/groups/168319220513562/permalink/298416314170518/
H. Skema regulator solar controller
https://www.facebook.com/groups/168319220513562/permalink/326467631365386/
I. Tips memilih solar controller yg baik
https://m.facebook.com/groups/168319220513562?view=permalink&id=286996515312498
J. Cara setting PWM sejuta ummat
https://m.facebook.com/groups/168319220513562?view=permalink&id=371977196814429

6. CACAT PV

A. Snail track pada Pv ternama
https://www.facebook.com/groups/168319220513562/permalink/297866530892163/
B. Apa itu snail track
https://www.facebook.com/groups/168319220513562/permalink/294764737869009/

7. TESTIMONI

A. Voltase drop
https://m.facebook.com/groups/168319220513562?view=permalink&id=292997464712403
B. Kelas pengguna PV
https://www.facebook.com/groups/168319220513562/permalink/295918244420325/
C. Kenapa listrik rumah memakai Ac bukan DC
https://www.facebook.com/groups/168319220513562/permalink/325009868177829/
D. Absensi pengguna grup
https://www.facebook.com/groups/168319220513562/permalink/326416211370528/
E. Efisien mana perlatan DC atau Ac
https://www.facebook.com/groups/168319220513562/permalink/324984101513739/
F. Kelas Pengguna Pv ditinjau dari voltase battery
https://www.facebook.com/groups/168319220513562/permalink/327583084587174/
G. Prosedur pengajuan lampu pju tenaga Surya
https://m.facebook.com/groups/168319220513562?view=permalink&id=341985919813557
H. Review pompa DC
https://www.facebook.com/groups/168319220513562/permalink/342424173103065/
I. Syarat-syarat ngurus kwh exim
https://www.facebook.com/groups/168319220513562/permalink/349370175741798/
J. Cara mengurus SLO
https://m.facebook.com/groups/168319220513562?view=permalink&id=371544733524342

1. INVERTER
https://www.facebook.com/groups/168319220513562/permalink/288969595115190/
2. PHOTOVOLTAIK
https://www.facebook.com/groups/168319220513562/permalink/287386348606848/
3. SOLAR CONTROLLER
https://www.facebook.com/groups/168319220513562/permalink/286996515312498/
4. MPPT
https://www.facebook.com/groups/168319220513562/permalink/288583445153805/

8. RENEWABLE ENERGI

A. +HHO GENERATOR
https://www.facebook.com/groups/168319220513562/permalink/318504248828391/
B. Bus listrik
https://www.facebook.com/groups/168319220513562/permalink/318236728855143/
C. Motor listrik Gesits
https://www.facebook.com/groups/168319220513562/permalink/316539625691520/
D. Desain Wind Turbin
https://www.facebook.com/groups/168319220513562/permalink/316444139034402/
E. Hybrid power wind + solar
https://www.facebook.com/groups/168319220513562/permalink/291041611574655/
F. Molis Ducati
https://www.facebook.com/groups/168319220513562/permalink/320617568617059/?sale_post_id=320617568617059
G. Hho generator apakah aman?
https://m.facebook.com/groups/168319220513562?view=permalink&id=319932562018893
H. Kompor induksi vs kompor gas
https://m.facebook.com/groups/168319220513562?view=permalink&id=339482643397218

Semoga diskusi yg telah kita lakukan, membawa kemanfaatan untuk orang lain, demi kemajuan bangsa dan negara tercinta ini.

Salam energi ramah lingkungan
Salam joss gandossss
Salam luar biasa ..

Sungkem karo ngopi…
Colek para sedulur di grup ini Slamet Sutrisna Bima’mbe Mbe Suyitno Ledeng Wilmar Djoe Amura Mdjms Deky Prasetyo George Frans Chandra Hermawan Hermawan Riyadi Bambang Nako Wijanarko Nur Harjanto Eko Setiaji Elkahfi Eh Akrie Lek Sigit Roe Khann Too Mera Tania Daniatun Fudin Safudin Niko Sutan Rajo Mudo Kriswanto Bin Warto Diharjo Andhika Chandra Wijaya Ali Mahmudi Af Afroni Kelvin Arkan Onoy Pulsar Kenthirs Fahrur Demak Lutfi Chaerul Rio Vian Luthor Fie Maz Gorro Ade Yuswantoro Widibae Jokothole Anas Basori Alwi Murtadho Rizky Slamet Riyadi Yuliastono Indrawan Pri Aza

Perjalanan Waktu.
Tulisan Menarik dari 2 Admin yg selalu kontra opini yg mengisi ramainya grup ini Yaitu om Deky Prasetyo dan paklek George Frans
Tulisan-tulisan ini banyak mengandung ilmu karena mengundang reaksi banyak orang untuk berdiskusi, berkomentar serta menelaah literasi-literasi. bacalah tulisan-tulisan menarik yg pernah singgah digrup ini. Semoga tercerahkan.

A. Review Mencuci Photovoltaik
https://www.facebook.com/groups/168319220513562/permalink/321100488568767/
B. Review BMS pada lifepo4
https://www.facebook.com/groups/168319220513562/permalink/316909055654577/
C. Seni Merakit lithium 18650
https://www.facebook.com/groups/168319220513562/permalink/315717692440380/
D. Maintenance aki plat tipis
https://www.facebook.com/groups/168319220513562/permalink/303756680303148/
E. Pengukuran battery selama 1 bulan
https://www.facebook.com/groups/168319220513562/permalink/298686460810170/
F. Pengaruh Suhu terhadap output PV
https://www.facebook.com/groups/168319220513562/permalink/294350224577127/
G. Review Kompor Induksi
https://www.facebook.com/groups/168319220513562/permalink/275517203127096/
H. Smart house dengan solar panel
https://www.facebook.com/groups/168319220513562/permalink/265536100791873/
I. Testing Battery LTO
https://www.facebook.com/groups/168319220513562/permalink/259848228027327/
J. DC-Dc low voltage
https://www.facebook.com/groups/168319220513562/permalink/321205951891554/
K. Living Low voltage
https://www.facebook.com/groups/168319220513562/permalink/314047689274047/
L. Hidrogen generator from PV
https://www.facebook.com/groups/168319220513562/permalink/312948679383948/
https://www.facebook.com/groups/168319220513562/permalink/312065392805610/
M. Alternatif Gas Melon
https://www.facebook.com/groups/168319220513562/permalink/311450299533786/
N. Inverter ribuan watt tidak cocol untuk system 12 V
https://www.facebook.com/groups/168319220513562/permalink/310491849629631/
O. PLN vs tenaga surya
https://www.facebook.com/groups/168319220513562/permalink/310216296323853/
P. Penerangan sederhana
https://www.facebook.com/groups/168319220513562/permalink/310145289664287/
Q. Tabel aki AGM
https://www.facebook.com/groups/168319220513562/permalink/309015619777254/
R. VRLA AGM tidak maintenance free
https://www.facebook.com/groups/168319220513562/permalink/308933643118785/
S. Case Offgrid
https://www.facebook.com/groups/168319220513562/permalink/308489306496552/
T. Introduction Lead Acid sederhana
https://www.facebook.com/groups/168319220513562/permalink/307757433236406/
U. PWM lebih murah
https://www.facebook.com/groups/168319220513562/permalink/307394403272709/
X.tenaga surya dg aki tdk ekonomis
https://www.facebook.com/groups/168319220513562/permalink/306004756745007/
Y. Lead acid Sulfasi
https://www.facebook.com/groups/168319220513562/permalink/305792583432891/
Z. Water heater inspirasi
https://www.facebook.com/groups/168319220513562/permalink/305213256824157/
A. Hidrogen molibdenum
https://www.facebook.com/groups/168319220513562/permalink/304815140197302/
B. Proyek pemerintah
https://www.facebook.com/groups/168319220513562/permalink/304489846896498/
C. Desain PV eropa
https://www.facebook.com/groups/168319220513562/permalink/304386060240210/
D. Pv tanpa lead acid
https://www.facebook.com/groups/168319220513562/permalink/304087430270073/
E. Perdebatan Aki
https://www.facebook.com/groups/168319220513562/permalink/303238297021653/
F. Aki Gell cocokah untuk Offgrid
https://www.facebook.com/groups/168319220513562/permalink/302896597055823/
G. Lifepo4 vs lead acid
https://www.facebook.com/groups/168319220513562/permalink/302629020415914/
H. Garansi Aki
https://www.facebook.com/groups/168319220513562/permalink/301887070490109/
I. Energi density aki
https://www.facebook.com/groups/168319220513562/permalink/300928877252595/
J. Ah rating aki
https://www.facebook.com/groups/168319220513562/permalink/300695510609265/
K. Teori bule susun paralel aki
https://www.facebook.com/groups/168319220513562/permalink/300625890616227/
L. Lead acid balanced
https://www.facebook.com/groups/168319220513562/permalink/300599867285496/
M. Peralatan DC
https://www.facebook.com/groups/168319220513562/permalink/299660897379393/
N. SHS dan lead acid
https://www.facebook.com/groups/168319220513562/permalink/299526664059483/
O. Cca or ah rating
https://www.facebook.com/groups/168319220513562/permalink/298610670817749/
P. Perdebatan aki NS
https://www.facebook.com/groups/168319220513562/permalink/298239214188228/
Q. Cycle life lithium
https://www.facebook.com/groups/168319220513562/permalink/298152907530192/
R. Prise comparation aki
https://www.facebook.com/groups/168319220513562/permalink/297463390932477/
T. Kritik aki
https://www.facebook.com/groups/168319220513562/permalink/297380630940753/
U. Aki basah vs deep cycle
https://www.facebook.com/groups/168319220513562/permalink/296810384331111/
X. Balancing dan equaliser
https://www.facebook.com/groups/168319220513562/permalink/296410541037762/
Y. Aki agm sudah 100% soc
https://www.facebook.com/groups/168319220513562/permalink/295614821117334/
Z. Deepcycle aki
https://www.facebook.com/groups/168319220513562/permalink/294350314577118/
….
X. INSPIRASI

1. @Candra junianto dengan Pemanen air hujan

https://m.facebook.com/groups/168319220513562?view=permalink&id=321539778524838

Postingan pemanen air hujan ini cukup menarik, bahkan saya diskusikan dikalangan dosen-dosen mengenai system ini, terbukti juga postingan ini banyak yg mengshare, serta diskusi yg cukup banyak dikomentari. Kerennn dahhhh

2. @Masa Patience. Dengan belanja Anggaran Solar home system.

https://m.facebook.com/groups/168319220513562?view=permalink&id=322815548397261

Untuk yg baru belajar mengenai PLTS, serta mau tahu harga seminim mungkin tapi sudah bisa menghasilkan listrik,postingan orang yg belum jelas namanya ini bisa dijadikan referensi, mohon pake akun nama yg jelas atuh…tak sunati sisan kapokkk. Tak panggilke dukun sunat Slamet Sutrisna

3. @Fredy Hermawan dengan SHS mini 11V

https://m.facebook.com/groups/168319220513562?view=permalink&id=321603168518499

Postingan ini cukup keren atau nekat ya, karena keterbatasan tanpa memakai SCC tapi tetap bisa menjalankan PV untuk kebutuhan listriknya, disamping juga om freddy membuat list harga kebutuhan baranngpun di sebutkan dengan jelas. Mantappp

4. @Jumari januar Dengan Plts untuk hidroponik

https://m.facebook.com/groups/168319220513562?view=permalink&id=322725875072895

Ini juga memberikan inspirasi kepada kita selain plts bisa digunakan untuk kebutuhan rumah, juga bisa kita putar untuk bisnis, dengan modal kecil tapi impack besar.

 

sumber blog pak wahyu

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