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<p align="center" style="margin: 0pt; text-align: center;"><b><span 宋体;="" 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;'="">Kappa 438</span></b><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;="" 宋体;'=""> </span></b><b><span 宋体;="" 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;'="">High Frequency</span></b><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;="" 宋体;'=""> PCB</span></b></p><p style="margin: 0pt;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'="">Hi,</span></p><p style="margin: 0pt;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'="">Hope this email finds you well.</span></p><p style="margin: 0pt;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'="">This RF PCB has FR-4 matched dielectric constant (Dk). The design transition to this PCB will be effortless.</span></p><p style="margin: 0pt;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'="">
</span></p><p style="margin: 0pt;"><b><span 宋体;="" 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;'="">Kappa 438 PCB</span></b></p><p style="margin: 0pt;"><span 10.5pt;="" "yes";="" arial;="" 1.0000pt;="" 宋体;'="">FR-4 was historically a material choice for many less demanding RF applications, but changes in the wireless infrastructure related to growing performance requirements, especially in small cells and carrier-grade Wi-Fi</span><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'="">. However, the design transition to Kappa 438 is an effortless alternative: </span></p><ol style="list-style-type: decimal; direction: ltr;"><li style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 10.5pt; font-style: normal; font-weight: normal;"><p style="color: rgb(0, 0, 0); font-family: Calibri; font-size: 10.5pt; font-style: normal; font-weight: normal; margin-top: 0pt; margin-bottom: 0pt; mso-list: l0 level1 lfo1;"><span 宋体;="" 10.5pt;="" "yes";="" arial
;="" 1.0000pt;'="">4.38 DK is tailored to FR-4 (DK 4.38) industry standard norms, which is ease of transition when upgraded electrical performance is needed over FR-4; </span></p><p style="color: rgb(0, 0, 0); font-family: Calibri; font-size: 10.5pt; font-style: normal; font-weight: normal; margin-top: 0pt; margin-bottom: 0pt;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'="">(2) Tighter DK and thickness tolerance than FR-4, it keeps consistent circuit performance.</span></p><p style="color: rgb(0, 0, 0); font-family: Calibri; font-size: 10.5pt; font-style: normal; font-weight: normal; margin-top: 0pt; margin-bottom: 0pt;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'=""> </span></p><p style="color: rgb(0, 0, 0); font-family: Calibri; font-size: 10.5pt; font-style: normal; font-weight: normal; margin-top: 0pt; margin-bottom: 0pt;"><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;="" 宋体;'="">Our </span></b><b><span 宋体;="
" 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;'="">PCB </span></b><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;="" 宋体;'="">Capability </span></b><b><span 宋体;="" 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;'="">(Kappa 438)</span></b></p></li></ol><table style="margin: auto auto auto 4.65pt; border: currentColor; border-image: none; width: 442.5pt; border-collapse: collapse; mso-padding-alt: 0.0000pt 5.4000pt 0.0000pt 5.4000pt;" border="0" cellspacing="0"><tbody><tr style="height: 15.75pt;"><td width="163" nowrap="" valign="center" style="background: rgb(200, 235, 53); padding: 0pt 5.4pt; border: 1pt solid rgb(0, 0, 0); border-image: none; width: 98.25pt; mso-border-left-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-right-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-top-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-or
phan;"><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">PCB Material:</span></b></p></td><td width="573" valign="center" style="background: rgb(200, 235, 53); border-width: 1pt 1pt 1pt 0px; border-style: solid solid solid none; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; width: 344.25pt; mso-border-left-alt: none; mso-border-right-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-top-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">Glass Reinforced Hydrocarbon Ceramic</span></p></td></tr><tr style="height: 15.75pt;"><td nowrap="" valign="center" style="border-width: 0px 1pt 1pt; border-style: none solid solid; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; background-color: transparent; mso-
border-left-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-right-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">Designation:</span></b></p></td><td nowrap="" valign="center" style="border-width: 0px 1pt 1pt 0px; border-style: none solid solid none; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; background-color: transparent; mso-border-left-alt: none; mso-border-right-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="
">Kappa 438</span></p></td></tr><tr style="height: 31.5pt;"><td width="163" valign="center" style="background: rgb(200, 235, 53); border-width: 0px 1pt 1pt; border-style: none solid solid; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; width: 98.25pt; mso-border-left-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-right-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">Dielectric constant:</span></b></p></td><td nowrap="" valign="center" style="background: rgb(200, 235, 53); border-width: 0px 1pt 1pt 0px; border-style: none solid solid none; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; mso-border-left-alt: none; mso-border-right-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt so
lid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">4.38</span></p></td></tr><tr style="height: 15.75pt;"><td nowrap="" valign="center" style="border-width: 0px 1pt 1pt; border-style: none solid solid; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; background-color: transparent; mso-border-left-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-right-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">Layer count:</span></b></p></td><td nowrap="" valign="center" style="border-width: 0px 1pt
0px 0px; border-style: none solid none none; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; background-color: transparent; mso-border-left-alt: none; mso-border-right-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-top-alt: none; mso-border-bottom-alt: none;"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">Double Layer, Multilayer, Hybrid PCB</span></p></td></tr><tr style="height: 15.75pt;"><td nowrap="" valign="center" style="background: rgb(200, 235, 53); border-width: 0px 1pt 1pt; border-style: none solid solid; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; mso-border-left-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-right-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-paginatio
n: widow-orphan;"><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">Copper weight:</span></b></p></td><td nowrap="" valign="center" style="background: rgb(200, 235, 53); border-width: 1pt 1pt 1pt 0px; border-style: solid solid solid none; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; mso-border-left-alt: none; mso-border-right-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">0.5oz (17 µm), 1oz (35µm)</span></p></td></tr><tr style="height: 13.5pt;"><td nowrap="" valign="center" style="border-width: 0px 1pt 1pt; border-style: none solid solid; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; background-color: transparent; mso-border-left-alt:
1.0000pt solid rgb(0, 0, 0); mso-border-right-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-top-alt: none; mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);" rowspan="2"><p align="justify" style="margin: 0pt; text-align: justify; vertical-align: middle; -ms-text-justify: inter-ideograph; mso-pagination: widow-orphan;"><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">PCB thickness:</span></b></p></td><td width="573" valign="center" style="border-width: 0px 1pt 1pt 0px; border-style: none solid solid none; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; width: 344.25pt; background-color: transparent; mso-border-left-alt: none; mso-border-right-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-top-alt: none; mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);" rowspan="2"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,=""
0,="" 0);="" normal;="" 0.0000pt;="">20mil (0.508mm), 30mil (0.762mm), 40mil (1.016mm), 60mil (1.524mm)</span></p></td></tr><tr style="height: 15.6pt;"></tr><tr style="height: 15.75pt;"><td nowrap="" valign="center" style="background: rgb(200, 235, 53); border-width: 0px 1pt 1pt; border-style: none solid solid; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; mso-border-left-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-right-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">PCB size:</span></b></p></td><td nowrap="" valign="center" style="background: rgb(200, 235, 53); border-width: 0px 1pt 1pt 0px; border-style: none solid solid none; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; mso-border-
left-alt: none; mso-border-right-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">≤400mm X 500mm</span></p></td></tr><tr style="height: 15.75pt;"><td nowrap="" valign="center" style="border-width: 0px 1pt 1pt; border-style: none solid solid; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; background-color: transparent; mso-border-left-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-right-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" norm
al;="" 0.0000pt;="">Solder mask:</span></b></p></td><td nowrap="" valign="center" style="border-width: 0px 1pt 1pt 0px; border-style: none solid solid none; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; background-color: transparent; mso-border-left-alt: none; mso-border-right-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 0.5000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">Green, Black, Blue, Yellow, Red etc.</span></p></td></tr><tr style="height: 16.5pt;"><td nowrap="" valign="center" style="background: rgb(200, 235, 53); border-width: 0px 1pt 1pt; border-style: none solid solid; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; mso-border-left-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-right-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.50
00pt solid rgb(0, 0, 0); mso-border-bottom-alt: 1.0000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><b><span 10.5pt;="" bold;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">Surface finish:</span></b></p></td><td nowrap="" valign="center" style="background: rgb(200, 235, 53); border-width: 0px 1pt 1pt 0px; border-style: none solid solid none; border-color: rgb(0, 0, 0); padding: 0pt 5.4pt; mso-border-left-alt: none; mso-border-right-alt: 1.0000pt solid rgb(0, 0, 0); mso-border-top-alt: 0.5000pt solid rgb(0, 0, 0); mso-border-bottom-alt: 1.0000pt solid rgb(0, 0, 0);"><p style="margin: 0pt; text-align: left; vertical-align: middle; mso-pagination: widow-orphan;"><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" normal;="" 0.0000pt;="">Bare copper, HASL, ENIG, OSP etc..</span></p></td></tr></tbody></table><p style="margin: 0pt;"><span 10.5pt;="" "yes
";="" arial;="" 1.0000pt;="" 宋体;'=""> </span></p><p style="background: rgb(255, 255, 255); margin: 0pt; text-align: left; line-height: 17.25pt; mso-pagination: widow-orphan;"><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" 0.0000pt;="">If you have requirements on</span><span 宋体;="" 10.5pt;="" "yes";="" arial;="" rgb(0,="" 0,="" 0);="" 0.0000pt;'=""> Kappa 438</span><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" 0.0000pt;=""> </span><span 宋体;="" 10.5pt;="" "yes";="" arial;="" rgb(0,="" 0,="" 0);="" 0.0000pt;'="">high frequency</span><span 10.5pt;="" "yes";="" arial;="" 宋体;'="" rgb(0,="" 0,="" 0);="" 0.0000pt;=""> PCB's, please do not hesitate to contact us by simply reply back to this email. I will get back to you ASAP.</span></p><p style="margin: 0pt;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'="">Looking forward to hearing from you.</span></p><p style
="margin: 0pt;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'=""> </span></p><p style="margin: 0pt;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'="">Best regards</span></p><p style="margin: 0pt;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'=""><span 宋体;="" 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;="" arial;'=""><span><span 宋体;="" 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;="" arial;'=""><strong>Jane Shi</strong></span><b><span 宋体;="" 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;'=""></span></b><strong> | Business development</strong></span><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'=""></span></span></span></p><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'=""><span 宋体;="" 10.5pt;="" bold;="" "yes";="" arial;="" 1.0000pt;="" arial;'=""><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'=""><p style="margin: 0pt;"><span 宋体;=
"" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'="">Bicheng PCB </span><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'=""> | </span><span><u><span 10.5pt;="" "yes";="" arial;="" rgb(0,="" 0,="" 255);="" underline;="" single;'=""><a href="http://www.highfrequencypcb.com/">www.highfrequencypcb.com</a></span></u></span><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;'=""> | Material partners: Rogers, Taconic, ITEQ, SHENGYI, TAIYO, KUANGSHUN</span></p></span></span></span><p style="margin: 0pt;"><br></p><p style="margin: 0pt; text-align: left;"><span 宋体;="" 10.5pt;="" "yes";="" arial;="" 1.0000pt;="" 255);="" rgb(54,="" 95,="" 145);="" rgb(255,="" 255,="" 255);'="">If you do not want to receive emails from Bicheng about marketing communications and special offers, reply as “remove” in the subject line.</span></p>
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